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BJC-50 SERVICE MANUAL Canon Target Readers This manual is published by Canon Inc. for qualified persons and contains the necessary technical information for technical theory, installation, maintenance, and repair of products. This manual covers all localities where the products are sold. For this reason, it may contain information that does not apply to your locality. Revisions This manual may include technical inaccuracies or typographical errors due to improvements or changes in the products. When amendments are made to the content of this manual, Canon will issue technical information as the need arises. In the event of major alterations to the content of this manual over a long or short period, Canon will publish a revised version of the manual. The following paragraph does not apply to any countries where such provisions are inconsistent with the local law. Trademarks The product names and company names appearing in this manual are the registered trademarks or trademarks of the individual companies. Copyright This manual is copyrighted and all rights reserved. Under the copyright laws, this manual may not be copied, reproduced, or translated into other languages, in whole or in part, without the express written consent of Canon Inc. except in the case of internal business use. Copyright 1998 by Canon Inc. CANON INC. BJ Products Quality Support Dept. 16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki, Kanagawa 213, Japan This manual was produced on an Apple Macintosh Power Mac 7300/180 personal computer and Apple LaserWriter II NTX-J laser beam printer; final pages were printed on Agfa SelectSet Avantra 25. A YANO 640MO drive system NJ640MO with MITSUBISHI MO disk cartridge MR230M1 were used for storing large volumes of page layout and graphic data for this manual. All graphics were produced with MACROMEDIA FREEHAND 7.0J. All documents and all page layouts were created with QuarkXPress 3.3J. I. ABOUT THIS MANUAL This manual is divided into five parts containing the information required for servicing the BJC50 printer. Part 1: Safety and Precautions This part contains information on how to service the unit safely. It is very important, and must be read. Part 2: Product Specifications This part outlines the product and its specifications. Part 3: Operating Instructions This part explains how to operate the unit properly, how it is installed, and how to use the service mode. Part 4: Technical Reference This part outlines the unit operation giving a technically. Part 5: Maintenance This part explains maintenance of the unit. It includes details of disassembly/assembly, adjustments required when assembling, troubleshooting procedures, and wiring/circuit diagrams, etc. This manual does not contain complete information required for disassembling and assembling the BJC-50 printer. Please also refer to the separate Parts Catalog. I II. TABLE OF CONTENTS Page 1- 1 1- 1 1- 2 1- 2 1- 3 1- 4 1- 5 1- 5 1- 5 1- 6 1- 6 1- 6 1- 7 1- 7 1- 8 1- 8 1- 8 1- 9 1- 9 1 -10 1 -11 1 -11 1 -12 1 -13 1 -14 Part 1: SAFETY AND PRECAUTIONS 1. PERSONAL SAFETY PRECAUTIONS 1.1 Moving Section of the Printer 1.2 Ink Stains 1.2.1 Ink path 1.2.2 Ink mist 1.3 BJ Cartridge Aluminum Plate 2. MACHINE PRECAUTIONS 2.1 BJ Cartridge 2.1.1 BJ cartridge handling 2.1.2 Automatically capping 2.1.3 When not using the printer 2.1.4 Ink conductivity 2.2 Ink Cartridge 2.2.1 Ink cartridge handling 2.3 Lithium Ion Battery Handling 2.3.1 Initial precautions 2.3.2 Storage precaution 2.4 Printer Handling 2.4.1 Precautions to prevent damage from static electricity 2.4.2 Ink leakage precautions 3. PRECAUTION FOR SERVICE 3.1 Precautions Concerning the Memory Data 3.2 Precautions to Prevent Damage from Static Electricity 3.3 Precautions for Disassembly/Assembly 3.4 Built-in Self-diagnostic Functions Part 2: PRODUCT SPECIFICATIONS 2- 1 2- 1 2- 2 2- 2 2- 3 2- 3 2- 4 2- 5 2- 5 2- 5 2- 6 2- 7 2- 7 2- 8 2- 8 2- 8 2- 8 2- 9 2- 9 2 -13 2 -15 2 -15 2 -20 2 -22 1. PRODUCT OUTLINE 1.1 Product Outline 1.2 Features 1.2.1 Printer 1.3 BJ Cartridge 1.3.1 Color BJ cartridge [BC-11e] 1.3.2 Black BJ cartridge [BC-10] 1.4 Options 1.4.1 BJ cartridge container 1.4.2 Lithium ion battery (LB-50) 1.4.3 Universal adapter (AD-360U) 1.4.4 Color image scanner cartridge (IS-12) 1.4.5 Interface Cable (BIFC-50) 1.5 Consumables 1.5.1 BJ cartridge (Color and Black) 1.5.2 Ink cartridge 1.5.3 Lithium ion battery (LB-50) 2. SPECIFICATIONS 2.1 General Specifications 2.2 Paper Specifications 2.3 Interface Specifications 2.3.1 Parallel interface 2.3.2 Infrared interface 2.4 Character Code Tables II Page 3- 1 3- 1 3- 2 3- 2 3- 3 3 -10 3 -11 3 -11 3 -11 3 -12 3 -12 3 -15 3 -15 3 -16 3 -16 3 -17 3 -18 3 -19 3 -20 3 -21 3 -21 3 -22 3 -23 3 -23 3 -23 3 -24 3 -25 3 -26 3 -26 Part 3: OPERATING INSTRUCTIONS 1. PRINTER SETUP 1.1 Unpacking 1.2 Installation 1.2.1 Installation space 1.2.2 Installation procedure 1.3 Names and Functions of Parts 2. TRANSPORTING THE PRINTER 2.1 Carrying the Printer 2.2 Transporting the Printer 3. PRINTER SERVICING FUNCTIONS 3.1 Error Indications 3.2 Function Setting 3.2.1 Default setting 3.3 Control Buttons 3.3.1 Cleaning the BJ cartridge 3.4 Self Test Print 3.4.1 Demonstration print 3.4.2 Function settings list print 3.4.3 Ripple pattern print 3.4.4 Nozzle check pattern print 3.4.5 All fonts pattern print 3.5 Hexadecimal Dump Test Print 3.6 EEPROM Data Setting 3.6.1 EEPROM data setting mode 3.6.2 Setting EEPROM data 3.6.3 Displaying EEPROM data 3.6.4 EEPROM settings list print 3.7 Rewriting Flash ROM 3.7.1 Flash ROM rewrite mode Part 4: TECHNICAL REFERENCE 4- 1 4- 1 4- 2 4- 2 4- 3 4- 4 4- 5 4- 5 4- 7 4- 8 4- 9 4- 9 4- 9 4 -10 4 -11 4 -12 4 -15 4 -15 4 -15 4 -16 4 -17 4 -17 1. OVERVIEW 1.1 Printer Block Diagram 1.2 Initial Flowchart 1.2.1 Print mode 1.2.2 Scanner mode 1.3 Print Signal Flow 1.4 Print Drive 1.4.1 Printing drive control 1.5 Scanner Drive 1.6 Power Off Operation Flow 2. FIRMWARE 2.1 Interface 2.1.1 Compatible mode 2.1.2 Nibble mode 2.1.3 ECP mode 2.1.4 IrDA 2.2 720 dpi Printing/Smoothing Feature 2.2.1 Canon extension mode 2.2.2 Emulation mode 2.3 Printing Modes 2.4 Optimum Printing Direction Control 2.5 Automatic Emulation Switching III Page 4 -18 4 -18 4 -18 4 -18 4 -19 4 -19 4 -20 4 -21 4 -21 4 -22 4 -23 4 -26 4 -28 4 -28 4 -29 4 -30 4 -30 4 -32 4 -32 4 -33 4 -34 4 -34 4 -35 4 -35 4 -36 4 -39 4 -39 4 -40 4 -41 4 -42 4 -44 4 -44 4 -44 4 -44 4 -44 4 -44 4 -45 4 -45 4 -46 4 -46 4 -46 4 -47 4 -49 4 -50 4 -50 3. 4. 5. 6. 2.6 Lithium Ion Battery Recharging 2.6.1 Switching to recharge mode 2.6.2 Recharge protection 2.6.3 Recharge control PRINTER MECHANISM 3.1 Overview of the Mechanical System of the Printer 3.1.1 Mechanical system configuration 3.2 BJ Cartridge 3.2.1 Color BJ cartridge structure 3.2.2 Black BJ cartridge structure 3.2.3 Bubble jet head-unit structure 3.2.4 Head-maintenance function and structure 3.3 Purge Section Structure 3.3.1 Configuration 3.3.2 Operation 3.4 Paper Feed Mechanism 3.4.1 Outline of paper feed mechanism 3.5 Carriage Section 3.5.1 Carriage section function 3.5.2 Carriage section structure PRINTER ELECTRICAL SYSTEM 4.1 Overview 4.2 Signal Control Section 4.2.1 Control board block diagram 4.2.2 Control section components 4.3 Power Supply Section 4.3.1 Block diagram of power supply section 4.3.2 Power supply section structure 4.3.3 Lithium Ion Battery Recharging Circuit 4.3.4 Lithium Ion Battery DETECTION FUNCTION 5.1 HP Sensor 5.2 Paper End Sensor 5.3 Delivery Sensor 5.4 Temperature Sensor 5.5 Head Temperature Sensor 5.6 Waste Ink Level Detection 5.7 Remaining-ink Level Detection SCANNER CARTRIDGE 6.1 Scanner Cartridge Overview 6.1.1 Block diagram 6.2 Scanner Cartridge Structure 6.3 Signal Contacts 6.4 Scan Mode 6.5 Calibration Part 5: MAINTENANCE 555555- 1 1 1 1 2 2 1. MAINTENANCE 1.1 Periodically-replaced Parts 1.2 Consumables 1.3 Periodic Maintenance 2. SERVICE TOOLS 2.1 List of Tools IV Page 5- 3 5- 4 5- 5 5- 5 5- 5 5- 5 5- 7 5- 7 5 -11 5 -31 5 -31 5 -36 5 -37 5 -37 5 -38 5 -38 5 -38 5 -39 5 -41 3. APPLYING THE GREASE 4. ADJUSTMENT 5. TROUBLESHOOTING 5.1 Overview of Troubleshooting 5.1.1 Definition 5.1.2 Precautions for troubleshooting 5.2 Error Condition Diagnosis 5.2.1 Diagnosis flowchart 5.2.2 Error recovery 6. CONNECTOR POSITION & PIN ALIGNMENT 6.1 Control Board 6.2 Carriage Ribbon Cable 6.3 BJ Cartridge 6.4 Scanner Cartridge IS-12 7. CIRCUIT DIAGRAMS 7.1 Parts Layout 7.1.1 Control board (Upper section) 7.1.2 Control board (Lower section) 7.2 Circuit Diagrams V III. ILLUSTRATION INDEX Page 1- 1 1- 2 1- 3 1- 4 1- 5 1- 7 1- 9 1 -10 1 -12 1 -13 1 -13 1 -14 Part 1: SAFETY AND PRECAUTIONS Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 1- 1 1- 2 1- 3 1- 4 1- 5 1- 6 1- 7 1- 8 1- 9 1 -10 1 -11 1 -12 Moving Sections of the Printer Ink Path Ink Mist BJ Cartridge Aluminum Plate BJ Cartridge Ink Inlet of the Ink Cartridge Contact Section of the Carriage Ribbon Cable Capping Position Electronic System of the Printer Control Board Removing Plastic Hooks IrDA Unit Part 2: PRODUCT SPECIFICATIONS 2- 1 2- 3 2- 4 2- 5 2- 5 2- 6 2- 7 2- 7 2- 8 2 -14 2 -14 2 -19 2 -19 2 -19 2 -20 2 -21 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 2- 1 2- 2 2- 3 2- 4 2- 5 2- 6 2- 7 2- 8 2- 9 2 -10 2 -11 2 -12 2 -13 2 -14 2 -15 2 -16 Printer Appearance Color BJ Cartridge [BC-11e] Black BJ Cartridge [BC-10] Cartridge Container Lithium Ion Battery Universal Adapter Color Image Scanner Cartridge Interface Cable Ink Cartridge Printing Area Printing Area (Envelope) Timing Chart (Compatibility Mode) Timing Chart (Nibble Mode) Timing Chart (ECP Mode) IrDA Method ASK Method Part 3: OPERATING INSTRUCTIONS 3- 1 3- 2 3- 3 3- 3 3- 4 3- 5 3- 6 3- 7 3- 8 3- 8 3 -10 3 -12 3 -18 3 -19 3 -20 3 -21 3 -21 3 -22 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 3- 1 3- 2 3- 3 3- 4 3- 5 3- 6 3- 7 3- 8 3- 9 3 -10 3 -11 3 -12 3 -13 3 -14 3 -15 3 -16 3 -17 3 -18 Packing Arrangement Installation Space Connecting the Universal Adapter Connecting the Interface Cable IrDA Angle of Rotation Removing the Head Cap and the Tape Installing the BJ Cartridge Replacing the Ink Cartridge Removing the Cap (Ink Cartridge) BJ Cartridge Container Names and Functions of Parts Control Panel Demonstration Print (Sample) Function Settings List Print (Sample) Ripple Pattern Print (Sample) Nozzle Check Pattern Print (Sample) All Fonts Pattern Print (Sample) Hexadecimal Dump Test Print (Sample) VI Page 3 -24 3 -25 Figure 3 -19 Figure 3 -20 Waste Ink Absorber (50% Used Sample) EEPROM Settings List Print (Sample) Part 4: TECHNICAL REFERENCE 4- 1 4- 4 4- 5 4- 6 4- 8 4- 9 4 -10 4 -11 4 -12 4 -13 4 -13 4 -15 4 -19 4 -21 4 -22 4 -23 4 -24 4 -24 4 -26 4 -27 4 -28 4 -29 4 -30 4 -32 4 -33 4 -34 4 -35 4 -39 4 -41 4 -43 4 -44 4 -46 4 -46 4 -47 4 -49 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 4- 1 4- 2 4- 3 4- 4 4- 5 4- 6 4- 7 4- 8 4- 9 4 -10 4 -11 4 -12 4 -13 4 -14 4 -15 4 -16 4 -17 4 -18 4 -19 4 -20 4 -21 4 -22 4 -23 4 -24 4 -25 4 -26 4 -27 4 -28 4 -29 4 -30 4 -31 4 -32 4 -33 4 -34 4 -35 Printer Diagram Printing Signal Flow Print Sequence (Black BJ Cartridge in HQ Mode) Print Signals Power Off Operation Flow Interface Timing (Compatible Mode) Interface Timing (Nibble Mode) Interface Timing (ECP Mode) IrDA Base Band Transmission Format (IrDA) Carrier Transmission Format (ASK) 720 dpi/Smoothing Function Printer Mechanism Color BJ Cartridge Black BJ Cartridge Bubble Jet Head Nozzle Arrangement Contact Part Purge Section Wiping Function Purge Section Structure Purge Operation Paper Pass Cartridge Section Function Carriage Section Structure Printer Block Diagram Control Board Block Diagram Block Diagram of Power Supply Section Lithium Ion Battery Recharge Circuit Battery Temperature Detection Circuit Sensor Location Scanner Cartridge Block Diagram Scanner Cartridge Contact Pad Layout Part 5: MAINTENANCE 5- 3 5 -12 5 -13 5 -13 5 -16 5 -16 5 -23 5 -24 5 -25 5 -31 5 -36 5 -37 5 -37 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 5- 1 5- 2 5- 3 5- 4 5- 5 5- 6 5- 7 5- 8 5- 9 5 -10 5 -11 5 -12 5 -13 Grease Application Sections Check Point Carriage Motor Paper Feed Motor BJ Head Temperature Sensor Carriage Ribbon Cable DC Plug Flexible Cables Head Connector Control Board Carriage Ribbon Cable BC-11e Contact Pad IS-12 Contact Pad VII IV. TABLE INDEX Page 3 -12 3 -15 3 -15 Page 4 -16 4 -25 4 -26 4 -43 4 -45 4 -49 4 -50 Part 3: OPERATING INSTRUCTIONS Table Table Table 3- 1 3- 2 3- 3 Error Display Function Setting (1) Function Setting (2) Part 4: TECHNICAL REFERENCE Table Table Table Table Table Table Table 4444444- 1 2 3 4 5 6 7 Printing Modes and Heating Methods Signal Contact Part Cleaning Ink Consumption Battery Temperature Detection Function List of Scanner Cartridge Signal Contacts List of Scan Mode VIII Part 1 SAFETY AND PRECAUTIONS Page 1- 1 1- 1 1- 2 1- 4 1- 5 1- 5 1- 7 1- 8 1- 9 1 -11 1 -11 1 -12 1 -13 1 -14 1. PERSONAL SAFETY PRECAUTIONS 1.1 Moving Sections of the Printer 1.2 Ink Stains 1.3 BJ Cartridge Aluminum Plate 2. MACHINE PRECAUTIONS 2.1 BJ Cartridge 2.2 Ink Cartridge 2.3 Lithium Ion Battery Handling 2.4 Printer Handling 3. PRECAUTION FOR SERVICE 3.1 Precautions Concerning the Memory Data 3.2 Precautions to Prevent Damage from Static Electricity 3.3 Precautions for Disassembly/Assembly 3.4 Built-in Self-diagnostic Functions Part 1: Safety and Precautions BJC-50 1. PERSONAL SAFETY PRECAUTIONS 1.1 Moving Sections of the Printer Be careful not to let your hair, clothes, accessories, etc., become caught in any of the moving sections of the printer. The moving sections of the printer are the carriage belt, carriage ribbon cable and carriage, which are driven by the carriage motor, and the paper feed gear and roller, pinch roller, eject roller and spurs which are driven by the paper feed motor. Eject Idler Gear Eject Idler Roller Carriage Motor Paper Feed Roller Pinch Roller Carriage Belt Carriage Shaft Eject Roller Spurs Carriage Paper Feed Motor Paper Feed Gear Pump Section Wiper Section Figure 1-1 Moving Sections of the Printer 1-1 Part 1: Safety and Precautions BJC-50 1.2 Ink Stains 1.2.1 Ink path Be careful not to touch the ink path of the printer and get stains on the work table, hands, clothes, etc., during repair. The ink path is the nozzle section of the BJ cartridge, the head cap, the head wiper, the maintenance jet receiving section and the waste ink absorber. The ink inlets of the ink cartridge and the joint pipes of the print head body are also part of the ink path, so take the same precautions. The ink is not a substance harmful to the human body, but it does contain an organic solvent (Black ink: isopropyl alcohol 67-63-0, glycerin 56-81-5, ethyleneglycol 107-21-1, Color ink: isopropyl alcohol 67-63-0). Be careful not to get any ink in your mouth or eyes. If you do get any into your eyes, wash it out with plenty of water and consult a doctor. If you somehow swallow a large amount of the ink, consult a doctor immediately. At that time, please communicate the items written on the BJ cartridge label. Since this ink contains dyes, if you get it on your clothes, etc., it will not come out. Cap Waste Ink Absorber Wiper Pump Ink Path Figure 1-2 Ink Path 1-2 Part 1: Safety and Precautions BJC-50 1.2.2 Ink mist The BJ cartridge ejects the ink onto the paper. After the printer has been used for a long time or under heavy duty use, a small amount of ink mist bouncing off the paper during printing may soil the platen section and the purge section. This soiling may soil the paper or the hands or clothes of service personnel, so wipe it off with a soft cloth or the like dampened with water. Platen Section Purge Section Check Point Purge Section Figure 1-3 Ink Mist 1-3 Part 1: Safety and Precautions BJC-50 1.3 BJ Cartridge Aluminum Plate Do not touch the aluminum plate of the BJ cartridge. The aluminum plate heats up during printing and becomes particularly hot during continuous high duty printing. It also heats up if printing is operated after the ink in the cartridge has run out. Danger ! High Temperature! Figure 1-4 BJ Cartridge Aluminum Plate This printer has the following functions to protect against the above temperature rise. The temperature is detected by the head temperature sensor in the BJ cartridge. (ex. approx. 70°c at 100% Duty printing) 1) During printing, if a temperature rise is detected to above a certain temperature, in order to protect the printer, it will print unidirectionally with a wait after each line until the BJ cartridge cools down. Also ERROR indicator will blink and printing will slow down. If this temperature continues for more than a certain period of time, the beeper sounds 8 times, the ERROR indicator and POWER indicator blink to indicate a head temperature error. Since the same type of temperature rise also occurs if printing is operated after the ink in the cartridge has run out, these protective functions are triggered. Therefore, the criterion for replacing the BJ cartridge or the ink cartridge is non-fire nozzles or diminished dot size during printing or the triggering of these protective functions. When printing is stopped by a head temperature error, handle the printer as explained in Part 5: 5. TROUBLESHOOTING (page 5-5). 1-4 Part 1: Safety and Precautions BJC-50 2. MACHINE PRECAUTIONS 2.1 BJ Cartridge 2.1.1 BJ cartridge handling To prevent clogging at the nozzles due to foreign matters, never touch the nozzle section of the BJ cartridge or wipe it off with tissue paper or the like. For the BJ cartridge, take the same care with the ink filter of the print head body to prevent poor ink suction due to foreign matters. Also, once you have removed the head cap and peeled off the protection tape from a BJ cartridge, either install the BJ cartridge in the printer or store it in the cartridge container to prevent clogging at the nozzles due to ink drying or foreign objects. Do not reinstall the removed print head cap and protection tape on the BJ cartridge. For the BJ cartridge, either install it in the printer with the ink cartridge installed or store it in the cartridge container. If the ink cartridge is not attached, poor ink suction due to ink drying or foreign matters can occur. BJ cartridges cannot be disassembled, assembled, or washed. If clogging at the nozzles or poor ink suction occurs, horizontal white lines appear in part of the printing. If cleaning does not restore proper printing, you must replace the BJ cartridge. Head Cap Protection Tape Nozzles Cartridge Container Figure 1-5 BJ Cartridge 1-5 Part 1: Safety and Precautions BJC-50 2.1.2 Automatically capping When the power is switched off with the POWER button, the printer automatically caps the nozzle section of the BJ cartridge to protect itself and prevent ink leakage. If you unplug the DC plug by mistake and cut off the power supply to the printer, plug the DC plug back in, start up the printer normally, then switch off the power with the POWER button. If the nozzle section is not capped, it may clog at the nozzles due to ink drying, or the ink may leak from the nozzles. 2.1.3 When not using the printer Even when not using the printer, leave the BJ cartridge installed in the printer or store it in the cartridge container. Do the same when carrying, shipping or storing the printer. If you remove the BJ cartridge from the printer and leave it as it is, foreign matters may stick or dry ink may clog the nozzle, making it impossible to use the BJ cartridge. 2.1.4 Ink conductivity The ink in the BJ cartridge is electrically conductive. If it leaks onto a mechanical section, mop it up with a damp paper towel or the like. If it leaks onto an electrical section, mop it up completely with tissue paper or the like. Especially, if the ink enters as far as to the IC chip of the PCB and it is hard to wipe off completely, a new PCB should be used. If the Universal adapter is connected to the printer with ink leaked, this may harm the electrical section. Never switch the power on if there has been a leak. 1-6 Part 1: Safety and Precautions BJC-50 2.2 Ink Cartridge 2.2.1 Ink cartridge handling To prevent poor ink suction due to foreign matters on the ink filter of the print head body, never touch the ink filter of the ink cartridge. When you remove the cap from an ink cartridge, install the ink cartridge on the print head body immediately to prevent clogging at the nozzles due to ink drying or foreign matters. Do not remove the ink cartridge unless you are replacing it. Do not use the protection cap removed from the ink cartridge to store the ink cartridge. Install the ink cartridge in the print head immediately after unsealing the pillow bag. If clogging at the nozzles or poor ink suction occurs, horizontal white lines appear in part of the printing. If cleaning does not restore proper printing, you must replace the BJ cartridge. Ink Inlets Figure 1-6 Ink Inlet of the Ink Cartridge 1-7 Part 1: Safety and Precautions BJC-50 2.3 Lithium Ion Battery Handling 2.3.1 Initial precautions The enclosed lithium ion battery must be installed in the printer and charged prior to its use. To ensure best performance, the lithium ion battery is only charged to 40% of its full capacity at the time of shipping. The battery must be fully charged once it is unpacked. After connecting the AC adapter and turning on the printer, the installed battery automatically begins charging. However, the battery will not be charged while printing or cleaning. Charging temperature must be between 5 and 35 degrees Celsius otherwise the battery will not be charged. The CHARGE indicator will light while the battery is charging and it will go off when charging is finished. The lithium ion battery serves both as a battery when the Universal adapter is not connected and a manual paper feed guide. A NO BATTERY ERROR occurs (ERROR and POWER indicators light and beeper sounds 6 times) if a lithium ion battery is not installed. 2.3.2 Storage precaution The advantages of a lithium ion batteries compared to Nicd and NiMH batteries are the low rate of self-discharge and the long lasting storage capacity. However, a drawback is that lithium ion batteries are susceptible to over discharge. At high temperatures, the rate of self-discharge is accelerated and the battery is rapidly over discharged. When storing the unused lithium ion battery, avoid storage in direct sunlight or near heaters. Also prevent storage at high temperature and make sure not to store the battery for an extended period of time. 1-8 Part 1: Safety and Precautions BJC-50 2.4 Printer Handling 2.4.1 Precautions to prevent damage from static electricity The electrical charge accumulated on a person when clothes rub can damage electric elements or change their electrical characteristics. Never touch the contact section of the carriage ribbon cable. Contact Section Carriage Ribbon Cable Figure 1-7 Contact Section of the Carriage Ribbon Cable 1-9 Part 1: Safety and Precautions BJC-50 2.4.2 Ink leakage precautions Do not carry, pack or store the printer without a BJ cartridge installed. The ink within the cap section will flow back and soil the inside of the printer. The nozzle section of the BJ cartridge is capped automatically when the power is switched off with the POWER button. When the power is turned off, the carriage is locked so that it does not move from the capping position. Cap Wiper Ink Cartridges BJ Cartridge Nozzles Lock Arm Figure 1-8 Capping Position 1-10 Part 1: Safety and Precautions BJC-50 3. PRECAUTION FOR SERVICE 3.1 Precautions Concerning the Memory Data This printer counts the total waste ink amount for the black BJ cartridge and the color BJ cartridge and stores these data in the EEPROM on the control board. Observe the following precautions during servicing. 1) Checking EEPROM data The number of sheets printed is counted and stored in the EEPROM to show the printer operating status. This data can be printed by test print 3 (Ripple pattern print). The waste ink quantity data is also stored in the EEPROM. This data is used to indicate a waste ink full error to prevent ink leakage if the amount of waste ink absorbed becomes full. 2) When replacing the control board If the control board on which the EEPROM is mounted is replaced, the quantity of waste ink absorbed must be set in the EEPROM by visually checking the amount of waste ink absorbed into the absorber from behind the printer base unit. If it is not set, the waste ink full error is not displayed, and ink may leak. 3) When replacing the printer base unit If a waste ink full error is displayed and the printer base unit is replaced, the waste ink amount data in the EEPROM must be set to zero. If it is not set to zero, a waste ink full error is displayed and the printer stops operating before the waste ink absorber is filled with waste ink. After the EEPROM is rest, the data it contained cannot be printed out with a test printout. If you want to check the stored data, be sure to execute test printout before resetting the EEPROM. When the stored data is reset, both the total count of printed sheets and the total waste ink amount will be reset together. These settings cannot be reset individually. 4) Rewriting the flash ROM The flash ROM on the control board serves as the control section of the printer. In earlier models a socket type masked ROM had to be upgraded by physically inserting a new upgraded masked ROM. The flash ROM can be rewritten and hence upgrading has been facilitated. When flash ROM needs to be upgraded, a FD containing the upgrading program will be distributed. Using this FD in a computer, the flash ROM of the printer can be upgraded. In order to rewrite the flash ROM, both the printer and computer need to be set in the rewrite modes. For details on checking the memory data with test print and for clearing them, see Part 3: 3.6 EEPROM Data Setting (page 3-23). When operation is stopped for the waste ink full error, handle the printer as explained in Part 5: 5. TROUBLESHOOTING (page 5-5 ). When rewriting the flash ROM, refer to the settings in Part 3: 3.7 Rewriting the Flash ROM (page 3-26). 1-11 Part 1: Safety and Precautions BJC-50 3.2 Precautions to Prevent Damage from Static Electricity The electrical charge accumulated on a person when clothes rub can damage electric elements or change their electrical characteristics. In order to prevent static electricity, make sure to touch some metallic part that is grounded to release the static electricity accumulated on your body before disassembling the printer for service. Control PCB Ass'y Figure 1-9 Electronic System of the Printer 1-12 Part 1: Safety and Precautions BJC-50 3.3 Precautions for Disassembly/Assembly The printer is made by combining many plastic parts. When disassembling the printer, be careful not to brake or bend plastic hooks. Take special care not to rip or bend the flexible cables when removing and reinserting them on the control board as they are very thin and frail. Also to prevent misconnection, make sure the cable is fully inserted in the connector. Details of disassembly and reassembly procedures are given in the Parts Catalog. Figure 1-10 Control Board Some of the plastic parts contain glass fibers for extra rigidity and precision. Due to their inflexible nature these plastic hooks break easily. Use a precision screwdriver or the like for disassembly, and do not apply excessive force to release a hook. Hook Never apply excessive force when releasing a hook. Figure 1-11 Removing Plastic Hooks 1-13 Part 1: Safety and Precautions BJC-50 When replacing the IrDA unit, be careful not to touch the light emitting and receiving parts. (Touching these parts may offset the optical axis or soil the lens and possibly inhibit infrared communication.) IrDA unit Figure 1-12 IrDA Unit 3.4 Built-in Self-diagnostic Functions The printer has built-in self-diagnostic functions to judge hardware defects. The results of self-diagnosis are indicated by the indicators and the beeper. For details, see Part 3: 3.1 Error Indications (page 3-12). 1-14 Part 2 PRODUCT SPECIFICATIONS Page 2- 1 2- 1 2- 2 2- 3 2- 5 2- 8 2- 9 2- 9 2 -13 2 -15 2 -22 1. PRODUCT OUTLINE 1.1 Product Outline 1.2 Features 1.3 BJ Cartridge 1.4 Options 1.5 Consumable 2. SPECIFICATIONS 2.1 General Specifications 2.2 Paper Specifications 2.3 Interface Specifications 2.4 Character Code Table Part 2: Product Specifications BJC-50 1. PRODUCT OUTLINE 1.1 Product Outline The BJC-50 bubble-jet full-color portable printer was carefully designed to improve mobility and it is more portable than ever. Lighter and more compact than previous models, the BJC-50 has new features such as the lithium ion battery and the exclusive IEEE 1284 compatible cable. The lithium ion battery allows manual feed printing at all times even when AC power is not available. The new IEEE 1284 compatible cable has a slim printer connector and it is less bulky than connector cables used in previous models. Another feature is the IrDA module which has realized wireless infrared communication. Color graphics printed on paper have also been improved by the introduction of drop modulated BC-11e cartridges that allow richer expression using large and small ink droplets. Using the optional scanner cartridge (IS-12), the BJC-50 can also be used as a portable color scanner. Figure 2-1 Printer Appearance 2-1 Part 2: Product Specifications BJC-50 1.2 Features 1.2.1 Printer ¥ Compact portable size External dimensions: 300 mm (11.8") W × 112.5 mm (4.4") D × 49 mm (1.9") H Weight: Approx. 0.9 kg (2.0 lb) (lithium ion battery included) ¥ Built-in manual sheet feeder ¥ High-speed printing (bursts) BC-11e (ANK 10cpi) BC-10 (ANK 10cpi) HQ mode 173cps 346cps HS mode 217cps 434cps ¥ High quality printing at 720 dpi ¥ Three built-in standard printer control modes: BJ mode (IBM Proprinter X24E emulation) LQ mode (EPSON LQ printer emulation) Native mode (Canon extended mode) BJL command ¥ Two new user-friendly replaceable black and color BJ cartridges: Black BJ cartridge BC-10: 128 nozzles (black), ink cartridge replaceable. Color BJ cartridge BC-11e: 136 nozzles (64 black + 3 × 24 each yellow, magenta, cyan); black and color ink cartridges replaceable. Ink cartridge BCI-10 Black: Black ink cartridge for BC-10 Ink cartridge BCI-11 Black: Black ink cartridge for BC-11e Ink cartridge BCI-11 Color: Color ink cartridge for BC-11e (yellow, magenta, and cyan all in one cartridge) ¥ Includes a BJ cartridge container for storing a BJ cartridge when it is not installed in the printer. ¥ Power on/off button (Software power switch used.) The printer does not have a mechanical power switch that physically connects and disconnects the Universal adaptor. Instead, it has a POWER button that starts up and shuts down printer operation. As long as the printer is plugged in, power is supplied even when it is turned off. ¥ Lock switch The switch can be used to lock the power on/off button to prevent accidentally turning on the printer while travelling. The lock is used after the power has been turned off. ¥ Bidirectional Centronics Interface (IEEE 1284 compatible) An exclusive IEEE 1284 compatible cable with a small connector on the printer connecting end is used. ¥ Infrared communication (IrDA (1.0) compatible) ¥ Printing up to legal size paper ¥ Optional scanner cartridge The printer can be used as a scanner when an image scanner cartridge (option) is installed instead of the BJ cartridge. 2-2 Part 2: Product Specifications BJC-50 1.3 BJ Cartridge 1.3.1 Color BJ cartridge [BC-11e] The BC-11e color BJ cartridge used for color printing is disposable. It comprises the print head with 136 nozzles and the replaceable ink cartridges (black and color). The heater board inside the printhead is located one in front of the other to separately print large and small ink droplets. If a print defect occurs, do a head cleaning. If print quality is not restored, try again once or twice. If the problem persists, perform a head refreshing. [Cleaning: 2 beep, with RESUME button; Head refreshing: 3 beeps, with RESUME button] If the head refreshing cannot restore the print quality, replace the BJ head. If the ink runs out or if more than six months have passed after the BJ cartridge was unsealed and the print quality is not improved by cleaning the print head once or twice, the ink cartridge should be replaced with a new one. Also the three ink color integrated type cartridge must be replaced if one of the inks runs out. The head has a total of 136 nozzles in a line: 24 yellow nozzles, 24 magenta nozzles, 24 cyan nozzles, and 64 black nozzles. Numbers of sheets printed Black: Approx. 23 sheets (HQ mode, 7.5% duty per color pattern) Color: Approx. 30 sheets (HQ mode, 7.5% duty per color pattern) BJ cartridge is printed with high quality at 360 dpi. Figure 2-2 Color BJ Cartridge [BC-11e] 2-3 Part 2: Product Specifications BJC-50 1.3.2 Black BJ cartridge [BC-10] The BC-10 black BJ cartridge used for super-high speed monochrome printing is disposable. It combines the print head with 128 nozzles and the replaceable black ink cartridge. If a print defect occurs, do a head cleaning. If print quality is not restored, try again once or twice. If the problem persists, perform a head refreshing. [Cleaning: 2 beep, with RESUME button; Head refreshing: 3 beeps, with RESUME button] If the head refreshing still cannot restore the print quality, replace the BJ head. If the ink runs out or if more than six months have passed after the BJ cartridge was unsealed and the print quality is not improved by performing cleaning once or twice, the ink cartridge should be replaced with a new one. The BC-10 BJ cartridge can print approx. 140 sheets in HQ mode (1500-character pattern). On plain paper and transparencies it has the same high resolution of 360 dpi as the BC-11e. Figure 2-3 Black BJ Cartridge [BC-10] To prevent nozzle clogging, after opening the seal, either install the BJ cartridge on the printer or store it in the BJ cartridge container. Also, never touch the print head (bubble jet nozzles) or wipe it with tissue paper or the like. 2-4 Part 2: Product Specifications BJC-50 1.4 Options 1.4.1 BJ cartridge container The BJ cartridge container is for storing BJ cartridges removed from the printer. When storing a BJ cartridge close the lid securely. One BJ cartridge container can store either the BC-10 or BC-11e. Store the BJ cartridges with the ink cartridges attached. When storing a BC-11e, always store it with the two ink cartridges, BCI-11 black and BCI-11 color intact. (Store a BC-10 cartridge with the BCI-10 black ink cartridge intact.) If the ink cartridge is not attached, ink may spill out of the nozzles and may be clogged with ink. When storing a BJ cartridge in the container, do not attach the protection tape and head cap to the cartridge as color mixing or foreign substances adhering to the printhead may affect the printhead performance. Figure 2-4 Cartridge Container 1.4.2 Lithium ion battery (LB-50) When installed on the printer, the lithium ion battery provides enough power to operate the printer. The removable lithium ion battery can be recharged by connecting the Universal adapter to it. The electrical circuit for recharging is inside the printer. Figure 2-5 Lithium Ion Battery 2-5 Part 2: Product Specifications BJC-50 1.4.3 Universal adapter (AD-360U) There is an Universal adapter adapted for each country to supply DC voltage to the printer. There is also a Universal adapter with AC plug cable, which supplies 100-250V AC input voltage to the printer. Universal Adapter AC Plug Cable (for each country) Figure 2-6 Universal Adapter 2-6 Part 2: Product Specifications BJC-50 1.4.4 Color image scanner cartridge (IS-12) The printer can be used as a color scanner when the color image scanner cartridge (IS-12) is installed in the printer carriage and the scanner driver is installed in the host computer. The appearance of the color image scanner cartridge IS-12 is identical to the BJ cartridge. IS-1 2 Figure 2-7 Color Image Scanner Cartridge 1.4.5 Interface Cable (BIFC-50) The IEEE 1284 compatible bidirectional parallel interface cable uses a Canon exclusive small-size connector on the printer connecting end. The computer connecting end remains unchanged. Figure 2-8 Interface Cable 2-7 Part 2: Product Specifications BJC-50 1.5 Consumables 1.5.1 BJ cartridge (Color and Black) Replacement BJ cartridges are the same as the ones supplied with the printer. 1.5.2 Ink cartridge The consumable ink cartridges are the same as the ink cartridges installed in the BC11e color BJ cartridge and BC-10 black BJ cartridge. There are three types: BC-11e black ink cartridge (BCI-11 black), color ink cartridge (BCI-11 color), and BC-10 black ink cartridge (BCI-10 black). The ink cartridges must be used within 6 months after the seal is opened. Numbers of sheets printed: BCI-11 Color ink cartridge Black: Approx. 23 sheets (HQ mode) (7.5% duty per color pattern) Color: Approx. 30 sheets (HQ mode) (7.5% duty per color pattern) BCI-10 Black ink cartridge Black: Approx. 140 sheets (HQ mode) (1500-character pattern) BCI-11 Black Ink Cartridge BCI-10 Black Ink Cartridge BCI-11 Color Ink Cartridge BC-10 Black BJ Cartridge BC-11e Color BJ Cartridge Figure 2-9 Ink Cartridge 1.5.3 Lithium ion battery (LB-50) Over discharge can be prevented by regularly recharging the battery. Lithium ion batteries do not have a memory effect and have a long lasting storage capacity. A good indication of the service life of a battery is when the number of printouts or duration of a charged battery starts to decrease. Replace the battery with a new one when this happens. 2-8 Part 2: Product Specifications BJC-50 2. SPECIFICATIONS 2.1 General Specifications 1. Type Portable serial printer (Bubble jet ink on-demand) 2. Paper handling Manual sheet feed 3. Sheet feeder capacity Plain paper: Coated paper: Transparency film: BPF: Glossy paper: Glossy film: BJ cloth: Envelope: Max. Max. Max. Max. Max. Max. Max. Max. 1 1 1 1 1 1 1 1 sheet (between 64g/m2 and 105g/m2) sheet sheet sheet sheet sheet sheet envelope 4. Printing speed Burst HQ mode HS mode BC-11e (Black printing) 173 cps (10 cpi) 217 cps (10 cpi) BC-10 (Black printing) 346 cps (10 cpi) 434 cps (10 cpi) 5. Printing direction (automatically selected according to the print data) Bidirectional/Unidirectional 6. Print width Max. 203.2mm (8") 7. Line feed speed Approx. 136 ms/line (128"/360" line feed) 8. Built-in print control mode BJ mode IBM Proprinter X24E emulation LQ mode Epson LQ printer emulation Native mode (Canon extended mode) BJL command 9. Line feed pitch (n: programmable) BJ mode 1/6", 1/8", n/60", n/72", n/180", n/216", and n/360" (n: programmable) LQ mode 1/6", 1/8", n/180", n/216", and n/360" 2-9 Part 2: Product Specifications 10. Printing characters Type face BJC-50 Roman, Gothic, Courier, Prestige and Draft Pitch BJ mode LQ mode 10, 12, 17 cpi, and PS 10, 12, 15, 17, 20 cpi, and PS Character matrix HQ mode HS mode 36 (H) × 48 (V) dots 18 out of 36 (H) × 48 (V) dots 11. Character set BJ mode: LQ mode: IBM character set 1, 2 and all (code page 437, 850, 860, 863, 865, 857, 855, 852, 864 and 869) Italic character set and Graphic character set 12. Number of columns printed BJ mode LQ mode 13. Bit image Vertical Horizontal Mode 10 cpi 10 cpi doublewide 10 cpi condensed 10 cpi condensed-doublewide 12 cpi 12 cpi doublewide Proportional spacing 10 cpi 10 cpi doublewide 10 cpi condensed 10 cpi condensed-doublewide 12 cpi 12 cpi doublewide 12 cpi condensed 12 cpi condensed-doublewide 15 cpi 15 cpi doublewide Proportional spacing Pitch 10 cpi 5 cpi 17 cpi 8.5 cpi 12 cpi 6 cpi PS 10 cpi 5 cpi 17 cpi 8.5 cpi 12 cpi 6 cpi 20 cpi 10 cpi 15 cpi 7.5 cpi PS 8, 24 and 48 dots 60, 120, 180, 240, 360 and 720 dpi 14. Buffer BJ mode LQ mode Input buffer 34 kB (or 2kB) 25 kB (or 2kB) Download buffer 0 kB (or 32kB) 0 kB (or 23kB) 15. Interface Bidirectional parallel interface (IEEE 1284 compatible) IrDA (1.0 compatible) 2-10 cpl 80 cpl 40 cpl 137 cpl 68 cpl 96 cpl 48 cpl Varies 80 cpl 40 cpl 137 cpl 68 cpl 96 cpl 48 cpl 160 cpl 80 cpl 120 cpl 60 cpl Varies Part 2: Product Specifications BJC-50 16. BJ cartridge 1) BC-11e Type Print head Ink color No. of pages printed Weight 2) BC-10 Type Print head Ink color No. of pages printed Weight Ink cartridge replaceable type of color BJ cartridge (large and small ink droplet producing type.) 136 nozzles (vertically-lined) Y, M, C (24 nozzles × 3) + Bk (64 nozzles) Yellow, Magenta, Cyan, Black Approx. 23 pages (HQ mode / black cartridge) (7.5% duty per color pattern) (30% print duty) Approx. 30 pages (HQ mode / color cartridge) (7.5% duty per color pattern) (30% print duty) Approx. 29g (including black and color ink cartridge) Ink cartridge replaceable type of black BJ cartridge 128 nozzles (vertically-lined) Black Approx. 140 pages (HQ mode) / cartridge (1500-character pattern) Approx. 280 pages (HS mode) / cartridge Approx. 26g (including black ink cartridge) 17. Detection functions Paper-out Paper width Home position BJ cartridge Ink cartridge Remaining ink level BJ cartridge identification Waste ink amount Paper delivery Available Not available Available Available Not available Available (Default: None) Available Available Available 18. Acoustic noise level Approx. 45 dB (A) or less during operation Sound pressure level: According to ISO 9296 19. Environmental requirements Temperature Humidity During operation 5¡C to 35¡C (41¡F to 95¡F) 10% to 90%RH (no condensation) 2-11 During storage 0¡C to 35¡C (32¡F to 95¡F) 5% to 95%RH (no condensation) Part 2: Product Specifications BJC-50 20. Power supply [using the Universal adaptor (AD-360U)] Voltage/Frequency Power Consumption USA/Canada AC120V, 60 Hz UK/Australia AC240V, 50 Hz Max. 30W Europe AC230V, 50 Hz Stand-by Status Recharging Max. 5W Max. 10W 21. External dimensions 300 mm (11.8") W × 112.5 mm (4.4") D × 49 mm (1.9") H 22. Weight Approx. 0.9 kg (2.0lbs) (including lithium ion battery) 2-12 Part 2: Product Specifications BJC-50 2.2 Paper Specifications 1. Paper size Letter (8.5" × 11") Legal (8.5" × 14") A4 (210 mm × 297 mm) A5 (148.5 mm × 210 mm) B5 (182 mm × 257 mm) Commercial number 10 envelope (4.1" × 9.5") European DL-size (220 mm × 110 mm) 2. Paper type Plain paper Coated paper (Canon coated paper LC-101/HR-101, A4/LTR) Envelope (Commercial number 10 or DL-size) Transparency (Canon transparency film CF-102, A4/LTR) BPF (Canon back print film BF-102, A4/LTR) Glossy paper (Canon glossy paper GP-201, A4/LTR) Glossy film (Canon glossy film HG-101, A4/LTR) BJ cloth (Canon BJ cloth, FS-101) (Do not use fanfold paper and labels.) 3. Print paper Manual Sheet Feed Vertical Horizontal Plain paper PB-SK* A4, B5 ● PB-SK* A4, B5 ● Kangas A4 ● Neusiedler A4 ● Boise Cascade LTR, LGL ● XX4024 (75g/m2) LTR, LGL ▲ XX4024 (90g/m2) LTR, LGL ▲ Plover Bond LTR, LGL ▲ Envelope COM#10 240 × 106 (mm) ▲ DL-size 240 × 110 (mm) ▲ Transparency film CF-102 A4, LTR ▲ Thick paper 91 to 105g/m2 Coated paper LC-101/HR-101 A4, LTR ▲ BPF BF-102 A4, LTR ▲ Glossy paper GP-201 A4, LTR ▲ Glossy film HG-101 A4, LTR ▲ BJ cloth FS-101 ▲ Type Paper Size Remarks Suggested paper Suggested paper Mailwell No.582 Chapman OHP film ● : Usable ▲: Usable (However, print quality and feedability may be deteriorated.) (Blank): Not usable *PB : PPC & BJ Manual paper feed at all times one page at a time. 2-13 Part 2: Product Specifications BJC-50 4. Printing range 1) Plain paper and special media The shaded position in the following figure shows the recommended printing area for papers and special media. The printerÕs mechanical printing area is inside the 3 mm top/bottom margins. We recommend setting the margins greater than 22 mm, however, because the print quality degrades below this. a b b d Printable Area c e A4 size Letter size Legal size a 210 mm 8.3" b 3.4 mm 0.13" c 297 mm 11.7" d 3 mm 0.12" e 3 mm 0.12" a 216 mm 8.5" b 6.4 mm 0.25" c 279 mm 11.0" d 3 mm 0.12" e 3 mm 0.3" a 216 mm 8.5" b 6.4 mm 0.25" c 356 mm 14.0" d 3 mm 0.12" e 7.6 mm 0.3" Recommended Printing Area A4 size Letter size Legal size a 210 mm 8.3" b 3.4 mm 0.13" c 297 mm 11.7" d 22 mm 0.87" e 22 mm 0.87" a 216 mm 8.5" b 6.4 mm 0.25" c 279 mm 11.0" d 22 mm 0.87" e 22 mm 0.87" a 216 mm 8.5" b 6.4 mm 0.25" c 356 mm 14.0" d 22 mm 0.87" e 22 mm 0.87" Figure 2-10 Printing Area 2) Envelope The shaded portion in the following figure shows the recommended printing area for a U.S. Commercial 10 envelope (9.5 × 4.1 inches) and an European DL-size envelope (229 × 110 mm). a b c e Printable Area European DL d f a b c d e f 220 6.4 10.4 110 3 3 U.S. Commercial number 10 mm mm mm mm mm mm 8.7" 0.25" 0.41" 4.3" 0.12" 0.12" a b c d e f 241 6.4 31.4 104 3 3 mm mm mm mm mm mm 9.5" 0.25" 1.2" 4.1" 0.12" 0.12" Recommended Area U.S. Commercial number 10 European DL a b c d e f 220 6.4 10.4 110 22 22 mm mm mm mm mm mm 8.7" 0.25" 0.41" 4.3" 0.87" 0.87" Figure 2-11 Printing Area (Envelope) 2-14 a b c d e f 241 6.4 31.4 104 22 22 mm mm mm mm mm mm 9.5" 0.25" 1.2" 4.1" 0.87" 0.87" Part 2: Product Specifications BJC-50 2.3 Interface Specifications 2.3.1 Parallel interface 1) Interface Type: 2) Operation mode: 3) Signal voltage levels: Bidirectional Centronics Interface (IEEE 1284 compatible) Compatibility mode / Nibble mode / ECP mode Input 0.0 V to +0.8 V +2.0 V to +5.0 V Low High Output 0.0V to +0.4 V +2.4 V to +5.5 V 4) Input / output 5) Interface cable: Each signal pulled up with +5V. Type: Twisted-pair shielded cable Material: AWG28 or larger Length: Up to 1.5 m (4.9 feet) 6) Interface connectors: Printer side: Japan Molex 52629-2611 (or equivalent) Cable side: Fujitsu Takamizawa Components FCN287P026-G/E(or equivalent) 7) Input / output signals and pin layout Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Signal STROBE DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8 ACKNLG BUSY P.E. GND I/O IN IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT OUT OUT Ð Ð *1. The level is raised to +5.0V at 390½. *2. N.C. means no connection. *3. The level is raised to +5.0V at 5.6k½. 2-15 Pin No. 14 15 16 17 18 19 20 21 22 23 24 25 26 Signal GND SELECT AUTO FEED XT +5.0V (*1) INIT ERROR +5.0V (*3) SELECT IN GND N.C. GND GND N.C. I/O Ð OUT IN Ð IN OUT Ð IN Ð Ð Ð Ð Ð Part 2: Product Specifications BJC-50 8) Input / output signals ● COMPATIBILITY MODE STROBE [Input]: When the printer receives the STROBE signal low pulse width must be greater than 1.0 µs from the computer, the printer reads the data from the interface and sets the BUSY signal high. DATA 1-8 [Input]: These signals are the 8 bits of parallel data sent from the computer. A high level indicates a logical 1; a low level indicates a logical 0. The printer reads the DATA signals when a STROBE signal is received. ACKNLG [Output]: The ACKNLG signal tells the computer that the data from the previous STROBE signal has been read. The computer does not release the next STROBE signal unless this signal is outputted. BUSY [Output]: When the printer sets BUSY signal high, it cannot receive data. The BUSY signal goes high in response to a STROBE signal. This signal remains high until the data is read. BUSY signal is also high when: Data is received. Receive buffer is full of data. A printer error condition such as out-of-paper, paper jamming, etc., has occurred. P.E. [Output]: The printer sets Paper End signal high when it determines that it has run out of the paper or that a paper jam has occurred. PE signal remains high until the operator loads paper and presses the RESUME button. PE remains unchanged after paper jamming. SELECT [Output]: In BJ mode When the printer is ready, it sets the SELECT signal high. In LQ mode The SELECT signal is always high (pulled up to +5V). AUTO FEED XT [Input]: This signal is ignored at all time. INIT [Input]: INIT signal from the system resets the printer to its initial power-on state. In BJ mode, the BUSY signal goes high, and any received data is printed. In LQ mode, the BUSY signal goes high, and the print buffer is cleared. When INIT signal goes low, the printer resets to the power-on default state. INIT signal pulse width must be greater than 50ms from the printer. The status at start-up is as follows: Carriage returns to home position. Function setting reverts back to the initial power-on state. 2-16 Part 2: Product Specifications BJC-50 ERROR [Output]: The printer sets the ERROR signal low if the printer detects an error or out-of-paper condition. SELECT IN [Input]: The DC1 and DC3 control codes become valid when this signal is high and invalid at low. The signal level is detected only when the printer is powered on and when the INIT signal is initialized. ● NIBBLE MODE STROBE [Input] (Host Clk): STROBE signal is always high to prevent the printer from reading data. DATA 1-8 [Input] (Data 1-8): Not used INIT [Input] : Not used AUTOFEED XT [Input] (Host Busy): A low signal indicates that data can be received. This signal is high after data is received. SELECT IN [Input] (1284 Active): SELECT IN signal is high at the beginning of negotiation and remains high throughout the nibble mode. This indicates that the printer is operating under bidirectional mode. After completing the nibble mode, SELECT IN signal is low. ACKNLG [Output] (Ptr Clk): By lowering ACKNLG signal, the printer informs the computer that the data has been outputted. When the AUTO FEED XT signal from the host computer is raised to high, ACKNLG signal responds by becoming high. BUSY [Output] (Ptr Busy): BUSY signal outputs data to the host computer. The third bit byte data is outputted first, followed by the seventh data. P.E. [Output] (AckData Req): PE signal outputs data to the host computer. The second bit byte data is outputted first, followed by the sixth data. SELECT [Output] (X flag): SELECT signal outputs data to the host computer. The first bit byte data is outputted first, followed by the fifth data. ERROR [Output] (Data Avail): ERROR signal outputs data to the host computer. The 0 bit byte data is outputted first, followed by the fourth data. 2-17 Part 2: Product Specifications BJC-50 ● ECP MODE STROBE [Input] (Host Clk): STROBE signal handshakes with the BUSY signal (Periph Ack) to transmit data from the computer to the printer during the forward phase. When STROBE signal is low, it indicates that data has been sent to data bus. Reverse phase is always high. DATA 1~8 [Input]: When the host computer outputs data during the forward phase, DATA signal is input signal. When the printer outputs data to the host computer during the reverse phase, DATA signal is output signal. INIT [Input] (Reverse Req): INIT signal is set to low to perform a recovery process of the data sent from the host computer during the forward phase. INIT signal responds to the low PE signal and becomes high. INIT signal is lowered when the forward phase idle is switched to the reverse phase. When the reverse phase is switched to forward phase, INIT signal is raised to high. AUTO FEED XT [Input] (Host Busy): During the forward phase, the AUTO FEED XT signal on data bus indicates whether the information is in a data or command form. Low: Command form High: Data form SELECT IN [Input] (1284 Active): SELECT IN signal is high at the beginning of negotiation and remains high during the ECP mode. This indicates that the printer is operating under bidirectional mode. After completing the ECP mode, SELECT IN signal is low. ACKNLG [Output]: The ACKNLG signal is always high during the forward phase. During the reverse phase, ACKNLG signal is low to indicate data has been outputted from the host computer to the data bus. ACKNLG signal responds high to the host computer's AUTO FEED XT signal high signal. P.E. [Output] (AckReverse): PE signal is always high during the forward phase and it is always low during the reverse phase. PE signal is lowered in response to the host computer's low INIT signal to confirm the request to transfer from the forward phase to the reverse phase. SELECT [Output] (X flag): SELECT signal is always high. ERROR [Output] (Periph Req): If there is still data to be transferred in the host computer, a low ERROR signal is released to request reverse phase. BUSY [Output] (PeriphAck): During the forward phase, BUSY signal is low if the computer can send data. Once the data has been outputted BUSY signal becomes high. During the reverse phase, the form of data sent from the printer to the data bus is shown as follows: Low: Command form High: Data form 2-18 Part 2: Product Specifications BJC-50 9) Timing 1.0µs 1.0µs 1.0µs min min min DATA 1-8 STROBE BUSY ACKNLG 3.5µs min. Figure 2-12 Timing Chart (Compatibility Mode) 1284 Active (SELECT IN) H AckDataReq (PE) P Data bit 2 Data bit 6 Data bit 3 Data bit 7 P Data bit 0 Data bit 4 P Nibble mode supporting Data bit 1 Data bit 5 Data (1 - 8) 0000 0000 HostBusy (AUTO FEED XT) HostClk (STROBE) PtrClk (ACKNLG) PtrBusy (BUSY) nDataAvail (ERROR) XFlag (SELECT) H H P P Printer status is busy TP TP TP TP TP TP Not transferable TP TP: minimum setup time Figure 2-13 Timing Chart (Nibble Mode) 1284 Active (SELECT IN) nAckReverse (PE) Data (1 - 8) HostAck (AUTO FEED XT) HostClk (STROBE) PeriphClk (ACKNLG) PeriphAck (BUSY) nPeriphRequest (ERROR) XFlag (SELECT) nReverseRequest (INIT) H Perror P 0001 0000 H P Byte0 Byte1 nCmd nCmd P P P Busy nPeriphRequest P Error Select ECP Mode Supported P H TP TP TP TP TP TP TP: minimum setup time Figure 2-14 Timing Chart (ECP Mode) 2-19 Part 2: Product Specifications BJC-50 2.3.2 Infrared interface 1. IrDA Interface 1) Interface IrDA Version 1.0 compatible 2) Optical specifications Light generation Wavelength: Intensity: Light angle: Light interception Wavelength: Intensity: Light angle: 0.85 to 0.90 µm 40 to 500 mW/Sr ±15¡ to 30¡ (along optical axis) 0.85 to 0.90 µm 4µW/cm2 to 500 mW/cm2 Max ± 15¡ (along optical axis) 3) Transfer speed 9600/19200/38400/57600/115200 bps 4) Communication method Half duplex, start/stop system (bidirectional) 5) Communication distance 0 to 1 m 6) Maximum received data size 2048 byte/packet 7) Modulation method 3/16 RZI (Return to Zero Invert) 8) Received signal Transfer Speed Transfer Speed Pwd=3/16 transfer speed Pwd 5V "0" "0" "1" 0V Infrared pulse width Pwd: 1.6µs to 3/16 transfer speed Figure 2-15 IrDA Method 2-20 RZI signal Part 2: Product Specifications BJC-50 2. ASK Interface 1) Interface SHARP Liquid Crystal Pen Computer: ZAURUS compatible 2) Optical specifications Light generation Wavelength: 0.85 to 0.90 µm Intensity: 40 to 500 mW/Sr Light angle: ±15¡ to 30¡ (along optical axis) Light interception Wavelength: 0.85 to 0.90 µm Intensity: 4 mW/cm2 to 500 mW/cm2 Light angle: Max ± 15¡ (along optical axis) 3) Transfer speed 9600 bps 4) Communication method Half duplex, start/stop system (unidirectional) 5) Communication distance Approx. less than 30 cm 6) Maximum received data size 512 byte/block 7) Modulation method ASK (Amplitude Shift Keying) Method (carrier: 500 kHz) 8) Received signal "0" Transfer Speed B "1" B "0" B 5V ASK signal 0V D T Infrared wave length T: 500kHz D: 50% Figure 2-16 ASK Method 2-21 Part 2: Product Specifications BJC-50 2.4 Character Code Tables Code page 437 Code page 850 2-22 Part 2: Product Specifications BJC-50 Code page 860 Code page 863 2-23 Part 2: Product Specifications BJC-50 Code page 865 Code page 857 2-24 Part 2: Product Specifications BJC-50 Code page 855 Code page 852 2-25 Part 2: Product Specifications BJC-50 Code page 864 Code page 869 2-26 Part 3 OPERATING INSTRUCTIONS Page 3- 1 3- 1 3- 2 3 -10 3 -11 3 -11 3 -11 3 -12 3 -12 3 -15 3 -16 3 -17 3 -22 3 -23 3 -26 1. PRINTER SETUP 1.1 Unpacking 1.2 Installation 1.3 Names and Functions of Parts 2. TRANSPORTING THE PRINTER 2.1 Carrying the Printer 2.2 Transporting the Printer 3. PRINTER SERVICING FUNCTIONS 3.1 Error Indications 3.2 Function Setting 3.3 Control Buttons 3.4 Self Test Print 3.5 Hexadecimal Dump Test Print 3.6 EEPROM Data Setting 3.7 Rewriting Flash ROM Part 3: Operating Instructions BJC-50 1. PRINTER SETUP 1.1 Unpacking After unpacking, check that you have the following: Universal Adapter BJ Cartridges Cartridge Container AC Plug Cable User's Manual Packing Lithium Ion Battery (LB-50) Packing Printer Tapes Box Figure 3-1 Packing Arrangement 3-1 Interface Cable (BIFC-50) Part 3: Operating Instructions BJC-50 1.2 Installation 1.2.1 Installation space Install the printer with the clearances given below for the printer to be operated efficiently. The spaces required to install the printer are shown below. 49mm 30 0m m m .5m 2 11 mm 29 Figure 3-2 Installation Space ¥ Use the printer within the following ranges of temperature and humidity: Ambient temperature: 5 ¡C to 35 ¡C Relative humidity: 10% to 90% (without condensation) ¥ Install the printer on a flat sturdy surface. Do not install it in places where it is subjected to vibration. ¥ Do not install the printer in places where it is exposed to direct sunlight or near a heater or air conditioner where the temperature changes greatly. Do not leave the printer in a car where the temperature rises suddenly. ¥ Do not install the printer in places where dust accumulates or it is subjected to salty wind. ¥ Do not place it near a television set, speaker, or other devices which generate magnetic fields. 3-2 Part 3: Operating Instructions BJC-50 1.2.2 Installation procedure a) Connecting the Universal adapter Insert the DC plug into the Universal adapter connector of the printer and the AC plug of the Universal adapter into the outlet. Mount the lithium ion battery on the printer. Figure 3-3 Connecting the Universal Adapter A printer powered with the Universal adapter or the lithium ion battery automatically executes the initial operation when powered on using the POWER button. When the RESUME button is held down together and the Universal adapter is plugged in, the service function (EEPROM data setting mode) is activated. See Part 3: 3.6 EEPROM Data Setting (page 3-23) for details. b) Connecting the interface cable Make sure that the printer and the computer are off. Plug the interface cable into the printer interface connector. Secure the cable with connector clips. Connect the other end of the interface cable to the computer and fix it securely. Figure 3-4 Connecting the Interface Cable 3-3 Part 3: Operating Instructions BJC-50 c) Connecting the Infrared interface When transmitting data from the computer to the printer through the built-in IrDA, beware of the following: ¥ The printer and computer IrDA transitters should be within 1 m of each other. (Depending on the computer, infrared rays may not reach the printer's IrDA transmitter) ¥ The printer IrDA module angle is must be within 15 degrees of the vertical and horizontal optical axis. ¥ Scanning a 180dpi color A4 document with the optional scanner cartridge can take up to 30 minutes. The use of bidirectional centronics interface for data transmission is recommended. IrDA 15° 15° Figure 3-5 IrDA Angle of Rotation When both interface mediums, i.e. the bidirectional centronic interface and the IrDA, are connected, the printer automatically, switches over to the interface medium that first detects the computer signals. 3-4 Part 3: Operating Instructions BJC-50 d) Switching on the power Make sure the lock switch is not locked and then press the POWER button to switch on the power. When the printer is powered up, it carries out the initial operation, then moves the carriage to the cartridge replacing position (center of the printer). The POWER indicator blinks to show that the printer is on standby with a BJ cartridge installed. Switch on the power for the equipment in this order: computer, other peripheral equipment, printer. e) Installing the BJ cartridge Two types of cartridges can be installed in the printer: black BJ cartridge (BC-10) and color BJ cartridge (BC-11e). The BJ cartridge BC-11 may be used however it cannot print small dots. 1) Removing the cap from the print head of the BJ cartridge Remove the BJ cartridge from the cartridge pack, then remove the orange head cap and tape protecting the nozzles as shown in the figure below. Color BJ Cartridge Black BJ Cartridge Orange Head Cap Tape Cartridge Pack Cartridge Pack Figure 3-6 Removing the Head Cap and the Tape Do not reuse a head cap and tape that have been removed once. If they are reused, the head may be clogged with foreign matter, or colors of ink may be mixed. Peel off the tape protecting the nozzles without touching the print head. Poor printing may be caused by scratches on the printhead or any foreign object adhered to it. After removing the cap and the tape, do not shake the BJ cartridge. Ink could splatter out if you do. 3-5 Part 3: Operating Instructions BJC-50 2) Installing the BJ cartridge Open the printer head cover, and install a BJ cartridge in the carriage. Press the CARTRIDGE button to return the carriage to the capping position. Color BJ Cartridge Black BJ Cartridge Figure 3-7 Installing the BJ Cartridge If the BJ cartridge is not installed correctly, the beeper sounds once when the CARTRIDGE button is pressed, and the carriage cannot be returned to the capping position. If the carriage does not move to the capping position, remove and reinstall the BJ cartridge. If the error still persists, see Part 5: 5. TROUBLESHOOTING (page 5-5). 3) Replacing a BJ cartridge Open the printer head cover, press the CARTRIDGE button to return the carriage to the BJ cartridge replacing position (center of the printer). Lift off the BJ cartridge. Install another BJ cartridge, press the CARTRIDGE button to return the carriage to the capping position. Place the removed BJ cartridge in the supplied cartridge container. (The container can contain a color or black BJ cartridge.) Since the carriage is secured by the lock arm in the capping position, never pull the carriage ribbon cable to move the carriage to the center. If the beeper sounds and the carriage does not move at all when the CARTRIDGE button is pressed, the BJ cartridge may have overheated. Leave the printer to cool down and wait a while before pressing the CARTRIDGE button again. 3-6 Part 3: Operating Instructions BJC-50 f) Replacing the ink cartridge The ink cartridge of the black BJ cartridge and color BJ cartridge can be replaced. (BCI-10, BCI-11 Bk, BCI-11 color) 1) Ink cartridge replacement criteria If the ink runs out or if more than six months have passed after the BJ cartridge was unsealed and the print quality is not improved by performing cleaning once or twice, the ink cartridge should be replaced with a new one. Since the color ink cartridge contains three color inks, it must be replaced if one of them runs out. If the print quality does not improve after replacing the ink cartridge, perform head refreshing once or twice. If the print quality does not still improve, the BJ cartridge must be replaced with a new one. 2) Removing the ink cartridge Open the printer head cover, and press the CARTRIDGE button to move the carriage to the BJ cartridge replacing position. Lift off the ink cartridge while holding down its tab. Black BJ Cartridge Color BJ Cartridge Figure 3-8 Replacing the Ink Cartridge Ink adheres to and around the ink cartridge's ink inlet, so handle the ink cartridge carefully not to stain your hands or clothes. 3-7 Part 3: Operating Instructions BJC-50 3) Installing the ink cartridge Take out the ink cartridge from its packaging, remove the protective cap for the ink inlet as shown in the figure, and install the ink cartridge in the printer with the reverse order as when removing it. After installing the ink cartridge, press the CARTRIDGE button in the same way as when installing a BJ cartridge to return the carriage to the capping position. BCI-11 Bk BCI-11 Color BCI-10 Bk Figure 3-9 Removing the Cap (Ink Cartridge) g) BJ cartridge container The printer is supplied with a BJ cartridge container to contain an BJ cartridge. If the BJ cartridge is removed from the printer, place it in the container. If the BJ cartridge is not stored in the container, nozzles may be clogged with ink, the BJ head may be scratched, or the BJ cartridge does not eject the ink onto the paper. The BJ cartridge container can contain a color or black BJ cartridge. Close Open Figure 3-10 BJ Cartridge Container Store the BJ cartridge with the ink cartridge attached. If the ink cartridge is not attached, ink may spill out or nozzles may be clogged with ink. Do not shake or drop the container. Otherwise, ink may leak. 3-8 Part 3: Operating Instructions BJC-50 h) Manual paper feeding Open the paper feeding tray and manually feed paper one sheet at a time. Align the left side of the paper with the left side of the paper tray and slide the paper guide to keep the paper straight and prevent skewing. Make sure to insert the sheet far in until it stops. Hold the sheet until the paper feed roller grabs and feeds the sheet partially into the printer. 3-9 Part 3: Operating Instructions BJC-50 1.3 Names and Functions of Parts This section describes the names of the parts of the printer and their functions. Head Cover Open the head cover to replace the BJ cartridge, ink cartridge or remove jammed paper. Lithium Ion Battery Used both as a source of power when AC power is not available and paper guide for manual paper feeding. RESUME button Loads paper into the printer or discharges stuck paper. Starts BJ head cleaning. POWER button Turns the printer on and off. Paper Feeding Tray Manually feed paper, one sheet at a time. Lock Switch Locks and prevents the printer from being powered on during tavelling. When locked the printer will not be powered on. Paper Guide Aligns the left edge and keeps the paper feeding straight. Universal Adapter Connector Connects the DC pulg of the Universal adapter. CARTRIDGE Button Used to move the cartridge to the BJ cartridge replacing position or return it to the original capping position when replacing the BJ cartridge or ink cartridge. ERROR/CHARGE Indicator Error when light is orange. Displays condition of error. Lighting: Recoverable error Not lighting: No error Blinking: Error or Warning Lithium ion battery charging when light is green. Displays condition of charging. Lighting: Charging in progress Not lighting: Charging finished If an internal error should occur while charging, the error indicator will be take precedence over the charging indicator. POWER indicator Indicates whether the printer is on line or off line. Lighting: ON Not lighting: OFF Blinking: Error, Warning or Data Transmitting Parallel Interface Connector Connects the centronics compatible parallel interface cable to the printer. The printer connector uses a Canon exclusive small-size connector. IrDA Module Figure 3-11 Names and Functions of Parts 3-10 Part 3: Operating Instructions BJC-50 2. TRANSPORTING THE PRINTER When carrying or transporting the printer, leave the BJ cartridge in or place it in the cartridge container to prevent ink leakage and drying of cartridge nozzles. The printer may be left installed. 2.1 Carrying the Printer Before carrying the printer, do the following: 1) Press the POWER button to turn the printer off and close the top cover. When the power goes off, the display turns off. 2) Unplug the interface cable. 3) Disconnect the DC plug of the Universal adapter from the printer. Disconnect the AC plug of the Universal adapter from the outlet. 4) Make sure that the BJ cartridge is at the capping position (right edge of the printer). If it is not at the capping position, turn the printer on again and perform step 1 and subsequent steps to move the carriage to the capping position. 5) Slide the Lock switch to the lock position. If you cut off the power to the printer by just disconnecting the Universal adapter or take out the BJ cartridge and carry it around by itself, the cartridge is not capped, so ink can leak or dry up in the nozzles. 2.2 Transporting the Printer Before transporting the printer, do the following: 1) Disconnect the interface cable and the Universal adapter in the same way as when carrying the printer. 2) Pack the printer and Universal adapter with the original packing materials. If you have thrown the original packing materials away, pack the printer with plenty of shock absorbing material. 3-11 Part 3: Operating Instructions BJC-50 3. PRINTER SERVICING FUNCTIONS 3.1 Error Indications The LED in combination with the beeper indicates the nature of 3 kinds of errors: fatal, error and warning. CARTRIDGE POWER RESUME CHARGE ERROR Figure 3-12 Control Panel Fatal Error: The ERROR indicator and POWER indicator blink simultaneously. The number of beeper sounds indicates the type of the error. Error: The ERROR indicator and POWER indicator light. The number of beeper sounds indicates the type of the error. Warning: The ERROR indicator blinks and the POWER indicator lights. The number of beeper sounds indicates the type of the error. TABLE 3-1 ERROR DISPLAY Error Condition ERROR LED POWER LED Beeper [Recoverable by customers] (Orange) (Green) Paper pick-up error Lights Lights 1 time Paper delivery error Lights Lights 2 times BJ cartridge check Lights Lights 3 times Cartridge mis-match Lights Lights 4times No battery error Lights Lights 6times Low battery error Lights Lights Long, then short Failed manual feeding warning Blinks Lights 1 times Ink low warning* Blinks Lights 2 times Cartridge replacement compulsory Blinks Lights 3 times completion error Low battery warning Blinks Lights 4 times Waste ink warning Blinks Lights 5 times Failed battery warning Blinks Lights 6 time [Unrecoverable by customers] 1 time ROM error Blinks Blinks 2 times RAM error Blinks Blinks Blinks Blinks 3 times No BJ head error Blinks Blinks 4 times HP sensor error Blinks Blinks 5 times Waste ink full error Blinks Blinks 6 times Internal temperature error Blinks Blinks 7 times Print position detection error Blinks Blinks 8 times Abnormal temperature rise Blinks Blinks 11 times EEPROM error Failed recharge circuit error Blinks Blinks 12 times * Ink low warning is enabled only when the ink low warning selection is set to on. For details on the countermeasures when the above errors occur, refer to Part 5: 5. TROUBLESHOOTING (page 5-5). 3-12 Part 3: Operating Instructions BJC-50 Recoverable errors by customer: 1) Paper pick-up error: Occurs when the paper cannot be fed properly. 2) Paper delivery error: Occurs when the printed paper cannot be ejected. 3) BJ Cartridge check: Occurs when a BJ cartridge is not installed and the cartridge replacement mode is terminated by the printer. This error is recovered once it enters the cartridge replacement mode by holding down the CARTRIDGE button. 4) Cartridge mis-match error: Occurs when the data in the host computer does not match with that of the installed cartridge. This error is recovered by holding down the CARTRIDGE button and installing the correct cartridge. 5) No battery error: Occurs when the lithium ion battery is not installed in the printer. This error is recovered by unplugging and re-plugging the DC jack of the Universal adapter once the lithium ion battery is installed. 6) Failed battery warning: Occurs when the printer detects a battery voltage lower than 7V. The printer begins to recharge the battery to bring up the voltage above 7V, however, if the voltage does not rise above 7V after 90 minutes, recharging is stopped. (At this point, the printer may still be operated with an Universal adapter.) Also occurs when the reserve recharging current is lower than a certain set value while the battery is recharging. Recharging is stopped. (There is a problem with either the recharging circuit or the battery itself.) This warning is recovered by removing the faulty battery and replacing it with a new one. Unrecoverable errors by the customer: 7) ROM error: Occurs when the ROM check during the initializing operation fails. 8) RAM error: Occurs when the RAM check during the initializing operation fails. 9) EEPROM error: Occurs when the EEPROM checking function fails during every process. (eg. initialization, printing, etc...) 10) Home Position error: Occurs when the home position cannot be detected. 11) Waste ink full error: Occurs when the "total waste ink amount" recorded on the EEPROM exceeds the prescribed limit. 12) Internal temperature error: Occurs when the temperature sensor (TH1) on the control board is defective. 13) Abnormal temperature rise error: Occurs when the diode sensor on a BJ cartridge head detects the internal temperature to be above a predetermined value. 14) No BJ head error: Occurs when the printer cannot detect the BJ cartridge other than during the cartridge replacement operation. 3-13 Part 3: Operating Instructions BJC-50 15) Print position detection error: Occurs during when the home position cannot be detected during the print position detection process. 16) Failed recharge circuit error: Occurs when the printer is turned on and detects the battery's recharging current higher than set value at the time. A recharging current higher than the set value means that the electrical circuit for recharging is faulty and hence recharging is stopped. 3-14 Part 3: Operating Instructions BJC-50 3.2 Function Setting Each printer function settings are set from the host computer using the printer setup utility in an exclusive Windows compatible driver. 3.2.1 Default setting The default setting can be set by button operation when the power is turned on. When the printer is turned on, hold down the POWER button until the beeper sounds the specified number of times. To select one of the default settings, release the POWER button. Release the POWER button after seven beeper sounds to display Table 1 with a list of the default setting modes. TABLE 3-2 FUNCTION SETTING (1) Mode Table 1 Table 2 Table 3 Table 4 Table 5 Beeper 7 times 8 times 9 times 10 times 11 times Remark Factory default setting ( for USA LV model) Factory default setting ( for HV model) TABLE 3-3 FUNCTION SETTING (2) Table 1 Table 2 Table 3 Table 4 Table 5 Operation Mode change LQ BJ LQ BJ BJ Print Mode HQ HQ HQ HQ HQ Reduction Mode 1/1 1/1 1/1 1/1 1/1 Font Roman Courier Roman Courier Courier A4/Letter LTR LTR A4 A4 A4 Page Length 23 in. 11 in. 23 in. 12 in. 12 in. Taxt scale OFF OFF OFF OFF OFF Smoothing OFF OFF OFF OFF OFF Paper FeedPosition 8.5 mm 3.0 mm 8.5 mm 3.0 mm 3.0 mm Automatic Line Feed CR CR CR CR CR Automatic Power Off ON (30 min) ON (30 min) ON (30 min) ON (30 min) ON (30 min) Font Lock OFF OFF OFF OFF OFF Input/Download Buffer OFF ON OFF OFF OFF Automatic Carriage Return LF LF LF Alternate Graphic Mode OFF OFF OFF International Character Set USA USA Character Set Italic SET 1 Italic SET 1 SET1 Code Page 437 437 437 850 437 OFF OFF OFF OFF OFF Ink Low Warning Auto Emulation Change OFF OFF OFF OFF OFF 3-15 Part 3: Operating Instructions BJC-50 3.3 Control Buttons 3.3.1 Cleaning the BJ cartridge If the printed image is blurred or a print defect occurs, such as a white steaking, print a test pattern to see whether the BJ cartridge is clogged with ink. If nozzles are clogged with ink, use the RESUME button to clean the BJ cartridge and nozzles. Please follow these instructions: 1) When the printer is turned on with the POWER button hold down the RESUME button until the beeper sounds twice. 2) Cleaning starts and the POWER indicator blinks. 3) When cleaning is finished, the POWER indicator lights. Cleaning takes approx. 27 seconds. After cleaning, test print the nozzle check pattern to check if the clogged nozzles have recovered. To print the nozzle check pattern, hold down the POWER button until the beeper sounds four times. After releasing the POWER button, manually feed a sheet of paper at the sound of a beep. Press the RESUME button to print. When the printer's power is on, hold down the RESUME button until 3 beepers sounds. Release RESUME button to start head refreshing. The printer carries out cleaning automatically in the following cases: 1) When the printer is turned on with the POWER button. 2) After replacing the BJ cartridge. 3) After replacing the ink cartridge. 3-16 Part 3: Operating Instructions BJC-50 3.4 Self Test Print The printer has the "off-line" self test function which can be executed without connection to a computer. This section explains how to execute the off-line self test. While the printer is off line, hold down the POWER button until the beeper sounds the specified number of times listed below, then press the RESUME button to start the offline test print through the manual feeder. The test print number corresponds to the number of beeper sounds. Test print mode Demonstration pattern print Functions settings list print Ripple pattern print Nozzle check print All fonts print Beeper 1 time 2 times 3 times 4 times 6 times Do not use any paper whose width is less than the A4-size paper width when executing a print test. Test print data is designed to be printed on A4-sized sheets, so if any paper whose width is less than the A4-sized paper width is used, the platen in the printer base unit may be stained with ink. To stop the test pattern printing, press the POWER button. When the POWER button is pressed, the printed paper is discharged, the printer turns off. 3-17 Part 3: Operating Instructions BJC-50 3.4.1 Demonstration print Figure 3-13 Demonstration Print (Sample) 3-18 Part 3: Operating Instructions BJC-50 3.4.2 Function settings list print Figure 3-14 Function Settings List Print (Sample) 3-19 Part 3: Operating Instructions BJC-50 3.4.3 Ripple pattern print Function setting (on: 1; off: 0) BJ mode XXXXXXXXXXXX-XXXXXXX No.1 (No.13: Unused) No.1A Number of monochrome prints Total number of monochrome dots Number of color prints Total number of color dots (black, cyan, magenta, yellow) Control ROM version LQ mode Function setting (on: 1; off: 0) X-XXXXXXXXXXXXXXXXXX No.1 (No.2: Unused) No.1A Number of monochrome prints Total number of monochrome dots Number of color prints Total number of color dots (black, cyan, magenta, yellow) Control ROM version Figure 3-15 Ripple Pattern Print (Sample) 3-20 Part 3: Operating Instructions BJC-50 3.4.4 Nozzle check pattern print Print out this pattern using all nozzles of the BJ cartridge. In the event that print defects appear, perform a cleaning operation of the head. If print quality does not improve even after the cartridge is cleaned once or twice times, replace the BJ cartridge. Refer to Part 3: 3.3.1 Cleaning the BJ cartridge (page 3-16 ). BC-11e Printed with the first nozzle. Printed with the first nozzle. Yellow 24 nozzles Magenta 24 nozzles Cyan 24 nozzles Black 24 nozzles 24 24 24 64 Printed with the 136th nozzle. Large and small dot printing 24 24 24 24 Printed with the 136th nozzle. Small dot printing Figure 3-16 Nozzle Check Pattern Print (Sample) 3.4.5 All fonts pattern print Figure 3-17 All Fonts Pattern Print (Sample) To stop the test print, press the POWER button. 3-21 Part 3: Operating Instructions BJC-50 3.5 Hexadecimal Dump Test Print The printer has the "on-line" self test function that outputs hexadecimal dump data when it is connected to a computer. The hexadecimal dump test is carried out when the printer is on line to print the data coming from the computer in hexadecimal code (hexadecimal data). Hold down the POWER button until the beeper sounds 5 times, release the button and set a sheet of paper in the manual paper feeder to start printing the on-line self test. Printing starts after the print buffer is full since this mode does not recognize the control code data as a control code. Test print mode Hexadecimal dump test print Selected number 5 Hexadecimal dump test print Figure 3-18 Hexadecimal Dump Test Print (Sample) 3-22 Print data contents Part 3: Operating Instructions BJC-50 3.6 EEPROM Data Setting 3.6.1 EEPROM data setting mode The required EEPROM data is set in this mode when replacing the control PCB assembly or the printer base unit (including the waste ink absorber). The EEPROM (IC14) on the control PCB assembly contains machine specific data, such as waste ink amount and the remaining quantity of ink in the ink cartridge. Data must be set in the EEPROM when replacing the control PCB assembly or the printer base unit (including the waste ink absorber). a) When replacing the control PCB assembly Before installing a new control PCB assembly, visually check the waste ink amount for the waste ink absorber in the printer base unit. After replacing the control PCB assembly, set the waste ink amount in the EEPROM. b) When replacing the printer base unit (including the waste ink absorber) Set 0% (EEPROM clear) after replacing the printer base unit. 3.6.2 Setting EEPROM data 1. Remove the lithium ion battery. 2. While holding down the RESUME button, insert the DC plug of the Universal adapter into the printer. 3. While holding down the RESUME button and the CARTRIDGE button, press the POWER button. Release all the buttons when one long and short beeper sounds. Press the CARTRIDGE button to select the following number of beeper sounds. Set the waste ink amount of the waste ink absorber in the printer base unit (Roughly estimate the amount of ink absorbed on the surface of the waste ink absorber). Beeper 7 times 16 times 15 times 14 times Waste ink amount (Use the CARTRIDGE button to change) 0% used (new ink absorbed/EEPROM clear) 25% used 50% used 75% used If 25%, 50% or 75% is selected: Press the RESUME button to set data in the EEPROM. After setting is completed, press the POWER button to turn off the printer. If 0%(EEPROM clear)is selected: Press the RESUME button. Initialization starts and a beeper sounds. To clear the data in the EEPROM, press the POWER button to turn off the printer and remove the DC plug of the Universal adapter from the printer's power connector after completing initialization. Clear the data in the EEPROM. 3-23 Part 3: Operating Instructions BJC-50 3.6.3 Displaying EEPROM data Printer Base Unit 0% Purge Unit Side 25 % 50 % 75 % 100 % Replacement Ink Absorber Waste Ink Figure 3-19 Waste Ink Absorber (50% Used Sample) The EEPROM contains the total waste ink amount and the total number of pages fed, which are counted while the printer is used. This data is useful to know the frequency of use of the printer. 1. Remove the lithium ion battery. 2. While holding down RESUME button, insert the DC plug of the Universal adapter into the Universal adapter connector of the printer. 3. While holding down the RESUME button and the CARTRIDGE button, press the POWER button until one long and short beeper sounds. Every time the CARTRIDGE button is pressed, a beeper sounds. When the RESUME button is pressed after the beeper sounds 13 times (i.e. pressing the cartridge button 13 times), release the button and set a sheet of paper in the manual paper feeder to start printing the EEPROM setting list. 3-24 Part 3: Operating Instructions BJC-50 3.6.4 EEPROM settings list print Figure 3-20 EEPROM Settings List Print (Sample) 3-25 Part 3: Operating Instructions BJC-50 3.7 Rewriting Flash ROM 3.7.1 Flash ROM rewrite mode This mode can only be accessed by a service person. The flash ROM program can be rewritten using this mode. When upgrading the ROM, a floppy disk containing the upgraded program will be provided. Follow these instructions in order to reset the settings in both the host computer and printer. The lithium ion battery should not be used in flash ROM rewrite mode. Please remove the lithium battery from the printer. a) Resetting the Printer 1) Remove the lithium ion battery. 2) While holding down the RESUME button and CARTRIDGE button, insert the DC plug of the Universal adapter in the printer until one long and short beeper sounds, then release the buttons. 3) Press the RESUME button until a short beeper sounds, then release the button. After completion of the initialization process, a short beeper will sound and the POWER indicator will light. The printer is now in the flash ROM rewrite mode and ready to receive the rewrite program. b) Resetting the Host Computer 1) Start up the computer and go to the MS-DOS prompt. 2) Connect the interface cable in the printer's LPT1 port. The operating system of the host computer should be MS-DOS. The average rewrite time is about 40 seconds, however depending on the host computer's performance and OS transfer speed, it may take more than 40 seconds. Reference [Computer: Pentium 133MHz, Microsoft Windows 95 (4.00.950a) ] c) Downloading the rewrite program 1) Transfer data from the computer to the printer using the MS-DOS COPY command. eg) COPY 230J0150.DL LPT1 File name in the FD directory 2) The POWER indicator blinks while the flash ROM is being rewritten. 3) Flash ROM rewrite is completed when two short beepers sound and the POWER indicator lights. 4) After checking that rewrite is completed, remove the DC plug from the printer. Make sure to unplug the DC plug before turning on the printer with the POWER button. 3-26 Part 3: Operating Instructions BJC-50 If you get a rewrite error, reset the following: Error message POWER indicator ERROR indicator DATA error Lights Blinks FLASH error Blinks Blinks (alternates with POWER indicator) RAM error Blinks Blinks (simultaneous with POWER indicator) Beepers 2 long beepers 2 long beepers 2 long beepers Follow these procedures when an error occurs: DATA error: Occurs after each rewrite data has been transfered. Hence, data prior to the error is already rewritten. Make sure that the floppy disk corresponds to the printer model. For example, do not rewrite data for BJC-50 with BJC-50v's. To transfer the correct data, check the connection with the computer and re-enter the rewrite mode and repeat the steps. FLASH error: Occurs after each rewrite data has been transferred. Hence, data prior to the error is already rewritten. Re-enter the rewrite mode and transfer the connect data. If the same error recurs, the flash ROM might be damaged. In that case, exchange the control board. RAM error: Occurs when the printer goes to check for available RAM to operate rewrite. No rewrite has taken place at this point. In this case, exchange the control board. 3-27 Part 3: Operating Instructions BJC-50 This page intentionally left blank 3-28 Part 4 TECHNICAL REFERENCE Page 4- 1 4- 1 4- 2 4- 4 4- 5 4- 7 4- 8 4- 9 4- 9 4 -15 4 -16 4 -17 4 -17 4 -18 4 -19 4 -19 4 -21 4 -28 1. OVERVIEW 1.1 Printer Block Diagram 1.2 Initial Flowchart 1.3 Print Signal Flow 1.4 Print Drive 1.5 Scanner Drive 1.6 Power Off Operation Flow 2. FIRMWARE 2.1 Interface 2.2 720 dpi Printing/Smoothing Feature 2.3 Printing Modes 2.4 Optimum Printing Direction Control 2.5 Automatic Emulation Switching 2.6 Lithium Battery Recharging 3. PRINTER MECHANISM 3.1 Overview of the Mechanical System of the Printer 3.2 BJ Cartridge 3.3 Purge Section Structure Page 4 -30 4 -32 4 -34 4 -34 4 -35 4 -39 4 -44 4 -44 4 -44 4 -44 4 -44 4 -44 4 -45 4 -45 4 -46 4 -46 4 -47 4 -49 4 -50 4 -50 3.4 Paper Feed Mechanism 3.5 Carriage Section 4. PRINTER ELECTRICAL SYSTEM 4.1 Overview 4.2 Signal Control Section 4.3 Power Supply Section 5. DETECTION FUNCTION 5.1 HP Sensor 5.2 Paper End Sensor 5.3 Delivery Sensor 5.4 Temperature Sensor 5.5 Head Temperature Sensor 5.6 Waste Ink Level Detection 5.7 Remaining-ink Level Detection 6. SCANNER CARTRIDGE 6.1 Scanner Cartridge Overview 6.2 Scanner Cartridge Structure 6.3 Signal Contacts 6.4 Scan Mode 6.5 Calibration Part 4: Technical Reference BJC-50 1. OVERVIEW 1.1 Printer Block Diagram Lithium Ion Battery Universal Adapter CNBT CNDC1 Control Board POWER EEPROM SW CARRETRIDGE SUME SW SW POWER CHARGE ERROR LED LED LED CNIF1 Flash ROM A S I C FONT ROM CNIR1 DRAM Driver Driver CNCR1 CNLF1 CNH CNSEN1 CNSEN2 Carriage Motor Paper Feed Motor BJ Cartridge Scanner Cartridge Paper End Sensor Home Position Sensor Figure 4-1 Printer Diagram 4-1 Delivery Sensor Part 4: Technical Reference BJC-50 1.2 Initial Flowchart 1.2.1 Print mode Insert the DC plug of the Universal adaptor Software initialization ¥ Connenct Universal adapter. ¥ ¥ ¥ ¥ ¥ ¥ ¥ ASIC initialization Hardware initialization LED light out Factory mode check RAM check ROM check Charge check Press the POWER button ¥ Turn the power on with the POWER button. Note) Lithium ion battery initialization begins here. Printer function initialization ¥ ¥ ¥ ¥ ¥ ¥ Paper feed motor initialization ASIC initialization ¥ Thermister check ¥ RAM check ¥ ROM check Printer function parameter setting EEPROM check (Waste ink quantity check) Low battery check Paper feed motor runs Paper end sensor detects and delivers paper Capping is released Carriage feed motor initialization ¥ Carriage motor runs. ¥ Carriage moves to its home position. Carriage position control ¥ Home position detection ¥ Print position correction value setting Maintenance jet Paper output ¥ If there is any paper in the printer, it is fed out. Automatic cleaning condition check Temperature sensor (TH1) check ¥ Temperature detection ¥ Print head temperature adjustment signal setting POWER indicator lights 4-2 Part 4: Technical Reference BJC-50 1.2.2 Scanner mode When powered on, the printer starts up in the printer mode regardless of the printer head type. Once the printer is on, it stands by to receive a data or a command. When the printer recognizes the scanner activation command, the printer starts operating in the scanner mode. After the printer recognizes the scanner head and performs the POWER ON operation, the printer starts to preheat the scanner head. Scanner cartridge preheating initialization Wait for command and message ¥ Host computer starts up scanner driver. Scanner activation command received Scanner activation message issued After preheating, start scan Scan ends ¥ Data received by DMA transfer stored in RAM. ¥ After scanning, the VH converted data is transferred to the host computer. After scanning selected area, scanning document is delivered END message 4-3 Part 4: Technical Reference BJC-50 1.3 Print Signal Flow The print signal flow from when the printer receives the print data to when printing is executed is described below. a) The print data (including the control signals) output by the computer is received by the ASIC through the interface, which is controlled by the ASIC on the logic board. Through the dedicated bus between the printer controller and DRAM, print data is stored in the DRAM's receive buffer area. b) The print data in the receive buffer is sent to the ASIC and separated into control commands and print data based on the data stored in the control ROM*. The control commands are processed in the ASIC. c) The print data is stored in the DRAM's print buffer. d) When the ASIC receives the command from the DRAM to start printing, it receives print data stored in the DRAM's print buffer. At the same time, the ASIC receives control commands stored in the control ROM*. e) The ASIC converts the print data into serial data as print drive signals and outputs the serial data to the bubble jet head. In the bubble jet head, the print data is converted from serial signals to parallel print data for each printed line. Printing is executed while the ASIC is controlled by the print control signals. * Control ROM: Flash ROM Control Board Host Computer a a DRAM b Receive Buffer c ASIC d Print Buffer b e d BJ Cartridge Control ROM* : Print Data : Control Signal Figure 4-2 Printing Signal Flow 4-4 Part 4: Technical Reference BJC-50 1.4 Print Drive The printer outputs control signals from the ASIC's printer controller to the BJ head to eject ink from the BJ head for printing. The control signals consist of the print control signal for ejecting ink from the head's nozzles and the temperature control signal for adjusting the head's temperature so that the amount of ink ejected is uniform. To archive optimum printing, both these control signals are optimized by the printer controller and sent from the carriage ribbon cable's signal contacts to the BJ head. The drive frequency varies depending on the printing mode and BJ cartridge type. 1.4.1 Printing drive control a) Black BJ cartridge drive control The black BJ cartridge drive control is executed by dividing the head's 128 nozzles into 8 blocks (16 nozzles each). These blocks are further divided into odd and even blocks (8 nozzles each). The odd blocks eject ink simultaneously and the even blocks do so as well. The control signals for the former are the block enable 0, 1, and 2 signals (BENB 0, 1, 2) and for the latter the signals are the even/odd enable signals (Even/Odd ENB). The heat enable A and D (HENB A, D), which are the heater drive control signals for ejecting the ink, comprise of a prepulse and main pulse. To constantly archive optimum ink ejection, the internal conditions such as the head's rank, printer temperature, and head temperature are monitored and the heater drive pulse width is varied before the pulse is output. Furthermore, the print drive signal from the printer controller is transferred to the BJ head's shift resistor according to the HLATCH timing. The printing drive signal (HDATA) is latched and when the print control and heater drive control signals are output together, the heater for the applicable nozzles is driven and the ink is ejected. b) Color BJ cartridge (Large/Small Drop) drive control The two-size droplet type color BJ cartridge has a print head with 136 nozzles and each nozzle has two heaters, one infront of the other, that regulate the ejection of large and small ink droplets. The 136 nozzles are divided into 8 functional blocks, each block consisting of 16 nozzles. Ink is ejected consecutively from each block. The order and selection of nozzles to be used are controlled by BLOCK ENABLE signals (BENB 0,1,2) and the EVEN/ODD ENABLE signal (Even/Odd ENB). HEAT ENABLE signals (HENB A,B,C,D) control the heater boards. BE2 BE3 BE4 BE5 BE6 BE7 BE8 O E O E O E O E O E O E O E O E A B A A B A A B B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B A B B A B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 BE1 to BE 8 : Block Enable 1 to 8 E : Even Enable O : Odd Enable A : Heat Enable 0 B : Heat Enable 1 Figure 4-3 Print Sequence (Black BJ Cartridge in HQ Mode) 4-5 : : BE1 Part 4: Technical Reference BJC-50 The HEAT ENABLE signals control the ejection of small and large ink droplets as follows: For each color, (Y, M and C), HENB B and A signals drive the front and back nozzle heaters respectively. For black, HENB C and D signals drive the front and back nozzle heaters respectively. The HEAT ENABLE signal consists of the pre-pulse and the main pulse that optimize ink ejection by constantly monitoring the head rank, the printer inner temperature and head temperature. The ink is ejected by varying the HEAT ENABLE pulse width. HQ 720dpi/smoothing HS 164µs (6.43kHz) 164µs (6.43kHz*) 92µs (7.82kHz) HLATCH HDATA 128 or 136 0 1 2 3 4 Data transmission to shift resistor HCLOCK Odd ENB Even ENB 1(0) B ENB 0 0(1) 1(0) 0(1) B ENB 1 1(0) 0(1) B ENB 2 1(0) 0(1) Head Drive in HQ Mode (Divided into 16) H ENB A, B, C, D 1 Block Odd ENB Even ENB B ENB 0 B ENB 1 1(0) 0(1) 1(0) 1(0) 1(0) B ENB 2 0(1) 0(1) 1(0) 0(1) 1(0) 1(0) 0(1) Head Drive in HS Mode (Divided into 8) 0(1) 0(1) Pre-Pulse Variable Pulse Width H ENB A, B, C, D Main Pulse 1 Block Odd ENB Even ENB Head Drive in 720dpi (Divided into 8) Large and small dot printing B ENB 0 B ENB 1 B ENB 2 H ENB A, D H ENB B, C 1 Block When using a black BJ cartridge, HENEB A and D are drive signals. When using the color BJ cartridge, HENEB A and B drive yellow, magenta and cyan, and HENEB C and D drive black. Figure 4-4 Print Signals 4-6 Part 4: Technical Reference BJC-50 1.5 Scanner Drive The scanner cartridge is recognized by the scanner cartridge contacts and TOP.S, C.CHA and C.CHK signals. These three signals are equivalent to the TOP, DIODE A and DIODE K signals of the BJ cartridge. Color distinction is performed by ID 0 and ID 1 as in the BJ cartridge. The three signals, CMD 0 (REN), CMD 1 (RWR) and CMD 3 (RDT) are used to set data in the scanner resistor. These signals correspond with the ODD ENB, BENB 0 and BENB 1 signals of the BJ cartridge. Together with a clock signal, serial data is output to the resistor. Data scanned with a scanner cartridge is output by S.SCLOCK (DTCK), S.SYNC (LNST) and S.DATA (DT). The scanner cartridge is operated when the S.SYNC (LNST) signal is inputted. The scanning dot data set in the resistor is output as serial data in sync with a clock signal. Output clock frequencies Scanner ➝ Printer Binary: 1MHz Multi-valued: 2MHz or 4MHz Scanner Cartridge Contact Signals Terminal Scanner Signal No. Signal Name Polarity 1 LAMP G n/a 2 LAMP G n/a 5 V LAMP n/a 6 V LAMP n/a 9 TOP.S O 10 DIAS 11 ID 0 O 12 ID 1 O 13 SQW 14 VSS n/a 19 CMD 0 (REN) I 20 CMD 1 (RWR) I 21 CMD 2 (RDT) I 22 CMD 3 (N.C.) 23 VDD n/a 24 S CLOCK (DTCK) O 25 S SYNE (LNST) I 26 S RES (RST) I 28 S DATA (DT) O 29 DIAS Remarks GND for LED GND for LED 24 V power for LED 24 V power for LED GND for scanner recognition OPEN for scanner recognition Color scanner cartridge detection Color scanner cartridge detection IS-11 and IS-12 detection GND Resistor enable signal Register recording clock signal Resistor data signal Unused 5V power Output clock Line start signal System reset signal Output data OPEN scanner detection 4-7 Head Signal ASIC Port Signal Name Polarity VHG n/a n/a VHG n/a n/a HVH n/a n/a HVH n/a n/a TOP O Input Port DIODE A O Input Port ID 0 O Input Port ID 1 O Input Port INK S2 Input Port H VSS n/a n/a ODD ENB I Output Port BNEB 0 I Output Port BNEB 1 I Output Port BNEB 2 I Output Port H VDD n/a n/a H CLOCK I Bidirectional Port H LATCH I Output Port H RES I Output Port H DATA I Bidirectional Port DIODE K O Input Port Part 4: Technical Reference BJC-50 1.6 Power Off Operation Flow Indicator blinks Finish the cleaning and paper feeding operation before turning off Motor, BJ cartridge, and buzzers are all off <In case it is not capped> Paper feed motor, initialization operation <In case of cartridge replacement mode> <No cartridge> <With cartridge> Carriage initialization Paper delivery operation Paper delivery operation Cleaning Capping with no head (To prevent backward flow in the cylinder) Capping Paper delivery operation Carriage initialization Air suction Capping Indicator off MPU/Printer controller section initialization END Figure 4-5 Power Off Operation Flow When the printer is turned off by unplugging the DC power cord, the power off operation is interrupted and stopped. Head capping might not be completed. Turn on the printer and turn it off using the POWER button and then unplug the DC power cord. 4-8 Part 4: Technical Reference BJC-50 2. FIRMWARE 2.1 Interface The printer supports a parallel interface and IrDA interface. The parallel interface is compatible with the bidirectional Centronics interface-standard (IEEE 1284). Compatible mode is the same as the Centronics interface-standard protocol. IrDA is an infrared data communication interface that is compatible with IrDA (1.0). The interface data transfer timing for each of the parallel interface mode is described below. 2.1.1 Compatible mode The parallel interface for the compatible mode transfers data in 8-bit units. Data is transferred with the STROBE, BUSY, and ACKNLG handshake signals. When the printer receives the data (Data 1-8) and a STROBE signal from the host computer and if the STROBE signal is low, then the printer controller which controls the parallel interface outputs the a BUSY signal and latches the data. After the BUSY signal is output, the printer controller sends the latched data from the DRAM bus to the receive buffer in the DRAM. After the data is completely written into the receive buffer in the DRAM, the printer controller outputs the ACKNLG signal and sets the BUSY signal to "Low". It then waits for the next data input from the host computer. 1.0µs 1.0µs 1.0µs min. min. min. DATA 1-8 STROBE BUSY ACKNLG 3.5µs min. Figure 4-6 Interface Timing (Compatible Mode) 4-9 Part 4: Technical Reference BJC-50 2.1.2 Nibble mode In nibble mode, the printer transfers data twice to the host computer in 4-bit units. The data is transferred with the PtrClk signal and HostBusy signal handshakes. After the printer negotiates with the host computer and enters the nibble mode, the printer confirms that the HostBusy signal is low, outputs a PtrClk signal with a nibble setting on the lower bits and lowers the PtrClk signal. After the host computer receives the lower bit data with the nibble mode, it raises the HostBusy signal. This signals the printer that the host computer has read the nibble data. Next, after the printer confirms that the HostBusy signal is low for a second time, it outputs the upper nibble bits and lowers the PtrClk signals. When the host computer raises the HostBusy signal, the handshake is completed. If there is no data to be sent to the host computer, the DataAvail signal becomes high and the printer stands by for the next data transfer. Host Busy PtrClk Data Avail Xflag AckDataReq Ptr Busy bit0 bit4 bit1 bit5 bit2 bit6 bit3 bit7 Tp Tp Figure 4-7 Interface Timing (Nibble Mode) 4-10 Part 4: Technical Reference BJC-50 2.1.3 ECP mode In ECP mode, the PeriphAck signal and the HostClk signal handshake to communicate. After the host computer negotiates with the printer, the printer raises the PeriphClk signal and the host computer lowers the HostAck signals. At this point the host computer sets the data on the bus and lowers the HostClk signal to transmit the data. When the printer is ready to receive data, it raises the PeriphAck signal. The transfer from the host computer is complete once the printer receives the data and lowers the PeriphAck signal. Next, to send data from the printer to the host computer, the host computer's ReverseRequest signal is lowered. The printer lowers the AckReverse signal, raises the PeriphRequest signal and prepares the data to be sent on the bus. In reverse transfer, the PeriphClk signal and the HostAck signal handshake to communicate. The printer sets the data on the data bus and lowers the PeriphClk signal to transmit data. The host computer raises the HostAck signal to indicate it is ready to receive the host computer data. The transfer of data from the printer is complete when the host computer lowers the HostAck signal after it receives the host computer data. Reverse Request Ack Reverse Data (1-8) Byte0 Byte1 Cmd Cmd PeriphClk Host Ack Periph Ack Tp Tp Figure 4-8 Interface Timing (ECP Mode) 4-11 Part 4: Technical Reference BJC-50 2.1.4 IrDA IrDA is an IrDA (1.0) conforming infrared serial communicating device that is built-in on the back side of the printer. Input and output of infrared light is conducted through this device. For wireless infrared one-to-one communication, the computer's IrDA and the printer's IrDA must be facing each other. The infrared light emitted from the IrDA travel sideways and lengthwise as sown in Figure 4-9. The forward direction is the light axis. As the infrared light travel sideways and lengthwise in a two dimensional plane, the intensity of the light along the light axis decreases disproportional to the square of the distance between the IrDAs. The IrDA standard establishes the infrared emission intensity and the receptor sensitivity to ensure quality transmission. The IrDA transmission end should be located within the shown circular cone. [distance: 1 m, angle: 15û from the light axis] The infrared transmitter and the receiver are integrated into one unit. Optical Filter LED Infrared Transmitter Infrare Infrared Receptor Photo Diode Figure 4-9 IrDA a) Transmission formats There are two transmission formats, the base band transmission and the variation transmission. In base band transmission, the RZ signals that represent bit data control the ON/OFF of the infrared light. When the data is "0" in the IrDA mode, infrared rays are emitted only for a duration of 3/16 of the time required to send 1 bit of data. In variation transmission, the amplitude of the infrared carrier frequency is varied depending on the digital data. (ASK format) Infrared light with a peak wavelength between 850 nm and 900 nm is switched on and off at 500kHz to be used as a carrier frequency. The ASK format is used by Sharp's Zaurus. 4-12 Part 4: Technical Reference BJC-50 ¥ Base band transmission format (IrDA) Infrared Pulses Electric Signals Data 0: Infrared pulse emission 1 1 0 0 1 0 1 1 0 0 1 0 Data 1: No infrared pulse emission Serial Communication Controller RxD Serial Communication Controller TxD Infrared Receptor Infrared Transmitter Figure 4-10 Base Band Transmission Format (IrDA) ¥ Carrier transmission format (ASK) Data Transfer Speed (1 bit data) 0 1 0 0 Infrared Pulses 2µs Figure 4-11 Carrier Transmission Format (ASK) 4-13 Part 4: Technical Reference BJC-50 b) IrDA standard To connect data transmission devices using infrared communication, the protocols physical and transport layers have been standardized. 1) Physical Layer (IrDA-SIR) 2) Dataring Layer (IrLAP and IrLMP) 3) Transport Layer (IrTP) The Printer does not have a IrTP in the transport layer. In the physical layer standards (IrDA-SIR), the infrared signal are established. The physical layer of the IrDA uses RZ signals in the base band format. As a communication method it employs a start-stop synchronized half-duplex communication and the transfer speeds are 9600/19200/38400/57600/115200 bps. In start-stop synchronized communication, a start bit (0) and an end bit (1) are added to the 8 bit data. After the 10 bit data has been transformed into RZ signals, the signals are sent to the infrared transmitter. The infrared receptor releases infrared pulses while the data is Low. When the data is High, the pulses are not released. The infrared transmitter transforms the received pulses into electric pulses. 4-14 Part 4: Technical Reference BJC-50 2.2 720 dpi Printing/Smoothing Feature 2.2.1 Canon extension mode In Canon extension mode, the printer driver creates 720 dpi data for the horizontal axis and sends it to the printer, allowing the printer to archive high-quality printing. With a black BJ cartridge installed, the printer driver smoothes the printed character's edges to 720 dpi along the horizontal axis. The 720 dpi data for the horizontal axis is sent to the printer and the edges are smoothed at a higher resolution. When a color BJ cartridge is installed, a 360 dpi data is represented by a set of two dots printed simultaneously to obtain a 720 dpi resolution. The multi-value data of the pixels processed by the printer driver for color correction, etc., is assigned three values (no printing, single-dot printing, two-dot printing) for each pixel. In the case of two-dot printing, the second dot is printed in the 720 dpi position. As a result, this method enables the printer to archive high degree gradation printing. 2.2.2 Emulation mode When a black BJ cartridge is installed, the printed character's edges can be smoothed at a high resolution of 720 dpi along the horizontal axis. Dots along the character's edges are added or deleted to smooth their edges. Along the horizontal axis, dots are also overlapped by half a dot. This eliminates jaggies and doubles the equivalent horizontal resolution. This smoothing feature greatly improves low-resolution, 180 dpi characters. However, it does not give noticeable improvement to TrueType fonts and illustrations. Note that with a color BJ cartridge installed, the emulation mode smoothing feature cannot be used. BJ 1/720 inch Add Dots Delete Dot 1/360 inch 1/360 inch Figure 4-12 720 dpi/Smoothing Function 4-15 Part 4: Technical Reference BJC-50 2.3 Printing Modes Depending on the cartridge installed, the medium, the printing mode, the resolution, the print data, etc., the printer varies the carriage movement, bubble jet head driving frequency, etc., to attain high-quality printing without any bleeding or shifting in the printout. When the 720 dpi printing/smoothing feature is used, the carriage feed pitch is set to1/720 inch. Although this slows down the carriage speed, the bubble jet head drive frequency (heat frequency) is increased so that the overall printing throughput decreases. During color printing at a single pass, the different colors printed at the same time overlap, often causing the colors to run. By printing with three passes, color bleeding is less prone to occur since the color printed immediately before is stable by the time the next color is printed over it. When print data is processed internally by the printer, the data is recognized and the number of ink nozzles to be used by the black ink is change automatically. The printing method for the respective printing modes are listed below. TABLE 4-1 PRINTING MODES AND HEATING METHODS With a Black BJ Cartridge Printing Mode Bk-HS Bk-HQ Bk-FINE Bk-Smoothing Bk-HQ (720) Bk-FINE (720) Carriage Movement 1 pass 1 pass 4 passes 1 pass 1 pass 4 passes Number of Nozzles 128 nozzles 128 nozzles 32 nozzles 128 nozzles 128 nozzles 32 nozzles Resolution [dpi] 180 360 360 360 720 720 Carriage Speed Heat Frequency [kHz] [kHz] 7.82 7.82 6.43 6.43 6.43 6.43 3.91 7.82 6.43 12.86 6.43 12.86 Number of Nozzles 64 nozzles 64 nozzles 16 nozzles 24 nozzles 24 nozzles 8 nozzles 24 nozzles 8 nozzles Resolution [dpi] 180 360 360 180 360 360 720 720 Carriage Speed Heat Frequency [kHz] [kHz] 7.82 7.82 6.43 6.43 6.43 6.43 7.82 7.82 6.43 6.43 6.43 6.43 4.73 9.46 6.43 12.83 With a Color BJ Cartridge Printing Mode Bk & White-HS Bk & White-HQ Bk & White-FINE Color-HS Color-HQ Color-FINE Color-HQ (720) Color-FINE (720) Carriage Movement 1 pass 1 pass 4 passes 1 pass 1 pass 3 passes 1 passes 3 passes * When the print resolution is 720 dpi, print data is not thinned. * When the print resolution is 720 dpi, processing to prevent colors running at the borders is not executed. 4-16 Part 4: Technical Reference BJC-50 2.4 Optimum Printing Direction Control To prevent vertical misalignment of the printed characters, etc., when print data is printed continuously in the direction of the paper feeding direction, printing is executed with the carriage moving from only one direction. However, when printing in the paper feed direction is not continuous, since vertical misalignment is not so noticeable, the printing direction is alternated so that printing is also executed from the opposite carriage direction. This improves the throughput. If four or more successive null rasters are detected in the lower (in the direction of paper ejection) 64 nozzles (24 nozzles with a color BJ cartridge) for the print data in the printer buffer during single-pass printing, printing is executed up to the null raster. From the null raster onward, printing is executed from the opposite carriage direction. From the next raster onward, printing is executed from the same carriage direction until the direction changes again. 2.5 Automatic Emulation Switching The printer analyzes the control command received from the host computer and determines whether it is in BJ or LQ mode. The emulation mode is thereby switched automatically. The BJ setup utility program can be used to turn on or off the automatic switching of the emulation mode. Control command recognition By recognizing the control command received from the host computer, the printer can determine which emulation mode to set. The printer determines the emulation mode when the control command is received at any of the following times: After the power is turned on and no print data has been received, when no print data has been received for over 10 seconds, or when the printer has no print data. Switching the emulation mode The emulation mode is switched automatically at any of the following times: When the printer has received over 512 bytes of data, when the data reception (even for data less than 512 bytes) has been interrupted for over 3 seconds, or when the power has been turned off before over 512 bytes of data is received or before over 3 seconds of data reception. Upon shipment from the factory or when the EEPROM is reset, it is set as "Invalid". Immediately after being "Valid", the emulation mode that was set immediately before will be valid. There are control commands with which the printer cannot determine the emulation mode to set. If the emulation mode set automatically is not the correct one, use the BJ setup utility program or the manual default setting to cancel the automatic switching of the emulation mode and set the emulation mode manually. 4-17 Part 4: Technical Reference BJC-50 2.6 Lithium Ion Battery Recharging 2.6.1 Switching to recharge mode The lithium ion battery must always be installed in the printer as the recharging circuit for the battery is inside the printer. When the printer is in stand-by mode or soft power OFF, the battery begins to recharge. Recharging is stopped when printing starts as the power supply from the Universal adapter is limited. Once the printer returns to the stand-by mode, the battery resumes recharging from where it stopped. A total of 6 hours recharging is required for the battery to reach its full capacity. Recharging will begin when all of the following conditions are met. 1) The printer is standing by* or is in soft power off. (Connect the Universal adatper) 2) Ambient temperatures is between 5 and 35¡C; battery voltage is more than 6.5V. 3) Recharge current is less than the set value; the open over discharge voltage is less than 12 V. * When the BJ cartridge is installed, the head cap must be on. When the scanner cartridge is installed, the driver must be closed. 2.6.2 Recharge protection The printer checks the following items at 100ms intervals while the battery is recharging. In case of an abnormal occurrence, recharging is immediately stopped and WARNING or ERROR messages will be displayed. Check Items: 1) Proper Universal adapter drive mechanism 2) Lithium ion battery installation 3) Normal temperature of lithium ion battery 4) Normal voltage of lithium ion battery 5) Recharge time exceeding 6 hours When an error occurs: a) Unless both check items 1) and 2) are "NO", recharging will not resume. b) When check item 3) is "NO", recharging will stop and a FAILED BATTERY WARNING is displayed. c) When check item 4) is "NO", recharging will stop and a FAILED BATTERY WARNING is displayed. d) When check item 5) is "YES", recharging is terminated. 2.6.3 Recharge control When the printer is powered on, the electrical current for recharging is first measured. If the current exceeds the set value, presuming it is a recharge circuit failure, recharging is stopped and a FAILED RECHARGE CIRCUIT ERROR message is displayed. Also, when the battery begins charging, the soft timer goes on and if the voltage does not reach 7 V after 90 min, recharging is stopped and a FAILED BATTERY WARNING will be displayed. Note that recharging will not start unless the battery and the ambient temperatures are between 5¡C and 35¡C. NO BATTERY ERROR will be displayed. Recharging will begin once the battery and the ambient temperatures reach the 5¡C and 35¡C range. 4-18 Part 4: Technical Reference BJC-50 3. PRINTER MECHANISM 3.1 Overview of the Mechanical System of the Printer The mechanical system of the printer is comprised of the ink/BJ cartridge, purge section, paper feed section, and the carriage section. The paper pick up/delivery operation of the mechanical system of the printer and the BJ cartridge maintenance operation are carried out by the paper feed motor and carriage motor. Paper Feed Section Carriage Section Eject Roller Carriage Motor Eject Idler Gear Carriage Belt Eject Idler Roller Ribbon Cable Paper Feed Roller Carriage Shaft Carriage Wipping Hooks Pinch Roller Paper Feed Motor Wiper Section Color BJ Cartridge Pump Section Purge Section Black BJ Cartridge Ink/BJ Cartridge Figure 4-13 Printer Mechanism 4-19 Part 4: Technical Reference BJC-50 3.1.1 Mechanical system configuration a) Ink/BJ cartridge The black BJ cartridge (BC-10) has a 360-dpi resolution and 128 nozzles, and the color BJ cartridge (BC-11e) has a 360-dpi resolution, and 64 black nozzles, 24 yellow, 24 magenta, and 24 cyan nozzles. You can print in either black or color simply by replacing the BJ cartridge. The ink cartridge (BCI-10) for the BC-10 and ink cartridges (BCI-11Bk, BCI-11color) for the BC-11e can be replaced respectively. b) Purge section The purge section has a function to maintain the high printing quality of the BJ cartridge bubble jet nozzles. The purge section consists of the pump section and wiper section. The pump section sucks ink within the BJ cartridge so that the nozzles are smoothly filled with ink for next printing. The wiper section wipes the head-face of the BJ cartridge. The purge section is driven by the paper feed motor and carriage motor. c) Paper feed section Paper must be fed manually, one sheet at a time. The built in manual paper feeder can take cut sheets up to Legal size. When a cut sheet is inserted into the manual paper feeder unit and detected by the paper end sensor, the paper feed roller and pinch rollers which are driven by the paper feed motor, will grab the sheet and feed it partially under the paper feed roller. Pressing the RESUME button will bring the paper to the print start position. Since the paper feed unit of the printer does not have a manual-paper feed knob, all paper-feeding operations are carried out with the RESUME button. d) Carriage section The carriage that holds the BJ cartridge is moved horizontally by the carriage motor and the drive belt. The position of carriage is detected by the home-position sensor, which is located on the right side of printer. The printing signals sent from the control board are transferred to the BJ cartridge on the carriage through the ribbon cable. The wiping hooks on the carriage move the latch lever and wiper lever to start wiping. 4-20 Part 4: Technical Reference BJC-50 3.2 BJ Cartridge 3.2.1 Color BJ cartridge structure The color BJ cartridge contains a 136-nozzle print head (64 black nozzles, 24 yellow nozzles, 24 magenta nozzles, and 24 cyan nozzles) for four colors. The print head, black ink cartridge, and color ink cartridges are designed to be replaced respectively. a) Air hole Each the black and colored ink cartridge has an air hole at the same pressure at the atmospheric pressure. b) Ink sponge The ink sponge in the black ink cartridge absorbs black ink. The color cartridge has three ink sponges, each of which absorbs each color ink. c) Ink supplier The ink supplier supplies a constant amount of ink to the connection among the head, black ink cartridge and color ink cartridge. d) Bubble jet head unit The bubble jet head unit consists of 136 nozzles and signal contacts. Each nozzle has two heaters located one in front of the other. By controlling the temperature of the heaters, the small and large dots can be printed. e) Holder The holder has a partition between the black ink cartridge and the color ink cartridge to prevent color mixture and to prevent from being mounted incorrectly the black ink cartridge and the color ink cartridge. Ink Supplier Ink Sponge Ink Suppliers Air Holes Ink Sponges Holder Bubble Jet Head Unit Figure 4-14 Color BJ Cartridge 4-21 Part 4: Technical Reference BJC-50 3.2.2 Black BJ cartridge structure The black BJ cartridge contains a 128-nozzle print head, and the print head and black ink cartridge can be replaced respectively. a) Air hole Air hole is provided in order to keep the ink cartridge at the same pressure as the outer atmospheric pressure. b) Ink sponge The ink sponge absorbs black ink. c) Ink supplier The ink supplier supplies a constant amount of ink to the connection between the head and ink cartridge. d) Bubble jet head unit The bubble jet head unit consists of the 128 nozzles and signal contacts. Ink Sponge Air Hole Ink Supplier Bubble Jet Head Unit Holder Figure 4-15 Black BJ Cartridge 4-22 Part 4: Technical Reference BJC-50 3.2.3 Bubble jet head-unit structure a) Bubble jet nozzles The ink in the ink sponge is filtered through a meshed ink filter, and is fed to the bubble-jet nozzles through the ink path in the holder. When the head-drive-current flows to the heater board of each nozzle, ink is heated up, and bubbles are produced and subsequently form into one large bubble. The head drive current is cut off before a drop of ink is ejected from the nozzle, but bubbling continues due to the heat remaining in the heater and the drop of ink is ejected from the nozzle. After ejecting the ink drop, the nozzle is refilled with ink. The heaters and their electrical elements within the bubble jet head are formed on a silicon plate by means of semiconductor technology. A photosensitive resin layer (nozzle wall) and plastic cover are bonded to the silicon plate, and nozzles are made in the photosensitive resin layer by laster. Signal Circuit Print Board Extra Fine Wire Connecting Section Protection Bond of Wire Connecting Section Silicon Plate Aluminum Plate Heater Plate Bubble Jet Nozzle Ink Path from Ink Cartrige 1 Start of Heater Power 2 While Heater Power is on Ink Filter 3 End of Heater Power 4 Bubble Contraction, Joint Pipe Plastic Cover Ink Bubble Formation Common Ink Chamber 5 Ink Drop Jetting Face Plate (Part of Plastic Cover) Figure 4-16 Bubble Jet Head 4-23 Part 4: Technical Reference BJC-50 b) Nozzle arrangement The bubble jet nozzles are arranged in a vertical line at intervals of 1/360 inch. Nozzle 136 Nozzle 128 Black Nozzles 73 ~ 136 Cyan Nozzles 49 ~ 72 Magenta Nozzles 25 ~ 48 Yellow Nozzles 1 ~ 24 Nozzle 1 Nozzle 1 BC-11e BC-10 Figure 4-17 Nozzle Arrangement c) Signal contact part The signal contact part of the bubble jet head contacts the carriage contact part to transfer control signals including print signal, to the bubble jet nozzles. 3 15 27 10 11 4 9 12 18 21 26 2 6 8 13 19 17 22 25 29 1 5 7 14 16 23 24 28 20 Figure 4-18 Contact Part 4-24 Part 4: Technical Reference BJC-50 TABLE 4-2 SIGNAL CONTACT PART Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Signal name VHG (LAMPG) IN/OUT Description / (scanner cartridge in use) ... GND for head drive voltage VH (GND for scanner drive voltage 24V) VHG (LAMPG) ... GND for head drive voltage VH (GND for scanner drive voltage 24V) MCH0 (N.C.) IN Drive signal for temperature control heater (Unused) MCH1 (N.C.) IN Drive signal for temperature control heater (Unused) HVH (VLAMP) OUT Head drive voltage (Scanner drive voltage) HVH (VLAMP) OUT Head drive voltage (Scanner drive voltage) WHT (N.C.) OUT Drive signal for subheater (Unused) N.C. (N.C.) ... Unused (Unused) TOP (TOPS) IN Detection signal for rank resistance (Scanner cartridge recognition signal) DIA (C.CHA) IN Head temperature sensor (diode) anode (Scanner cartridge recognition signal) ID0 (ID0) IN BJ cartridge (black/color) detection signal (Scanner monochrome/color detection signal) ID1 (ID1) IN BJ cartridge (black/color) detection signal (Scanner monochrome/color detection signal) HCONT IN BJ cartridge (BC-11/BC-11e) detection signal (IS(INKS2) 11/IS-12 detection signal) HVSS (VSS) ... GND for head's logic drive voltage (GND for scanner's PCB drive voltage) HENBD (N.C.) OUT Head's heater drive signal (Unused) EVEN ENB (N.C.) OUT Even nozzle heater drive signal (Unused) OUT Head's heater drive signal (Unused) HENBA (N.C.) OUT Head's heater drive signal (Unused) HENBC (N.C.) OUT Odd nozzle heater drive signal (Scanner's register ODD ENB (REN) setting signal) BENB0 (RWR) OUT Block enable decoder generation signal (Scanner's clock signal for serial data transfer to register) BENB1 (RDT) OUT Block enable decoder generation signal (Scanner's serial data signal) BENB2 (N.C.) OUT Block enable decoder generation signal (Unused) HVDD (VDD) OUT Head's logic drive voltage +5V (Scanner's PCB drive voltage +5V) HCLOCK (DTCK) OUT Clock signal for print data transfer (Clock signal for scanning data input) HLATCH (LNST) OUT Timing signal to latch print data (Timing signal to start scanning) HRES (SRES) OUT Latch reset signal (Scanning operation reset signal) HENBB (N.C.) OUT Head's heater drive signal (Unused) HDATA (DT) OUT Print data (Scanning data) DIK (C.CHK) IN Head temperature sensor (diode) cathode (Scanner cartridge recognition signal) 4-25 Part 4: Technical Reference BJC-50 3.2.4 Head-maintenance function and structure Carriage Wiping Hooks Cap Wiper Pump Figure 4-19 Purge Section a) Cleaning function Cleaning operation is performed to correct the print quality problem, which is caused by none-ejection of ink, and to prevent the print defects resulting from improper ink ejection from the BJ cartridge head nozzles. Cleaning operation includes purging, wiping, capping, and maintenance jet. The cleaning time varies according to the type of BJ cartridge installed and the printer status. The printer carries out cleaning in the following cases: TABLE 4-3 CLEANING INK CONSUMPTION Approx. Ink Consumption (g) BC-10 BC-11e Printer Status 1) First time use of BJ cartridge Printer turned on by 2) Less than 72 hours from POWER button last cleaning 3) More than 72 hours from last cleaning BJ cartridge replaced or ink cartridge replaced RESUME button pressed 1) Cleaning 2) Head refreshing 0.36 0.52 0.12 0.18 0.24 0.24 0.12 0.24 0.26 0.52 0.26 0.52 The cleaning operation is performed in the purge section. The cap, cylinder, and pump are operated by the gears and cams, which are driven by the paper-feed motor. (See Part 4: 3.3 Purge Section Structure. (page 4-28)) 4-26 Part 4: Technical Reference BJC-50 b) Purging Purging is performed to correct/prevent the non-ejection of ink, which is caused by unnecessary bubbles and dust on the head faceplate. The cap and pump in the purge section are used for purging operation. c) Capping Capping operation is performed to correct/prevent the non-ejection of ink, which is caused by the dried-up of ink inside nozzles. Cap is pressed against the head faceplate when the carriage moves to the home position. When the cap moves away from the faceplate, waste ink in the cap is sucked by purging operation. The sucked ink is absorbed by the absorber in the pump and finally absorbed by the waste ink absorber. Capping is performed in the following cases: 1. When the printer is turned off with the POWER button 2. When the printer receives no data or commands for 1 minute while paper is set in the paper feeder. d) Wiping Wiping operation is performed to correct/prevent the non-ejection of ink, which is caused by paper-powder on the head faceplate or by the foreign materials in ink. The wiper is set and released by wiping hooks on the carriage. When the carriage moves from the home position, the wiper touches the aluminum plate of the head, removes the stain from the wiper and then wipes off the ink from the faceplate. Wiping operation is performed in the following cases: 1. When the number of dots printed or the print time exceeds the preset value during printing 2. After purging 3. Before capping Carriage BJ Head Latch Lever Hooks Wiper Lever Wiper 1. Wiper is set. 2. Wiper is released. Figure 4-20 Wiping Function e) Maintenance jet The maintenance jet is performed during cleaning to remove bubbles inside nozzles and the dust near ink ejection apertures. In this operation, the ink is ejected from the head into the cap and sucked into the waste ink absorber through the pump section. 4-27 Part 4: Technical Reference BJC-50 3.3 Purge Section Structure 3.3.1 Configuration Cap Wiper Paper Feed W-gear Trigger Gear Paper Feed Gear Pump Gear Pump Arm Cylinder Gear Pump Piston Shaft Waste Ink Absorber Figure 4-21 Purge Section Structure a) Cap section When the carriage is at the home position, the cap is pressed against the print head faceplate to cap the head. The rubber cap connects to the pump, and ink is sucked from the head by the pump during cleaning. The sucked ink is absorbed by the ink absorber in the pump and finally collected in the waste-ink absorber. The cap is moved by the p pump arm, which is driven by the pump gear. Therefore, the b) Wiper section The wiper wipes excess ink off the print head faceplate when the carriage moves from left to right. The wiper is moved up or down by the projections on the carriage. The ink attached to the wiper is removed by the aluminum plate on the head. Moreover when the wiper comes down, the ink remaining on it is splashed on the pump gear. c) Pump section The pump contains a rubber piston, whose piston shaft is linked with the cylinder gear. The cylinder gear is rotated by the pump gear. Then the pump is opened to absorb the ink collected in the cap into the waste ink absorber. The ink in the cap flows into the absorber in the pump, and then into the waste ink absorber. d) Waste ink absorber The ink sucked from the cap and the ink collected in the pump are sucked into the absorber in the pump, and absorbed into the waste-ink absorber. 4-28 Part 4: Technical Reference BJC-50 3.3.2 Operation The purge section is driven by the paper feed motor. The paper feed motor drives the paper feed gear through the paper feed double gear. When the carriage moves to the right from the home position, the trigger gear rotates along with the paper feed gear, which rotates the pump gear and cylinder gear. At this time while the ink is stored in the cap, the cylinder gear rotates so as to move the piston shaft to the right. After that, the piston shaft is moved to the left so that the ink in the cap is absorbed into the waste ink absorber. The cap moves up and down as the pump arm moves along the pump gear cam. (Capping) Cap Wiper Paper Feed Double Gear Trigger Gear Paper Feed Gear Pump Gear Pump Arm Cylinder Gear Pump Waste Ink Absorber Piston Shaft Piston Rings Figure 4-22 Purge Operation 4-29 Part 4: Technical Reference BJC-50 3.4 Paper Feed Mechanism 3.4.1 Outline of paper feed mechanism In this printer paper is fed manually, one sheet at a time. The paper feed mechanism of the printer is divided into the paper pick-up section and printing/paper-delivery section. These operations are driven by the paper feed motor which feeds the paper at a line feed pitch of 1/360 inch. a) Paper pick-up section The paper pick-up section consists of the paper feed roller and the pinch rollers. Paper is fed through the paper feed slot, one sheet at a time. When the paper is detected by the paper end sensor and reaches the contact point of the paper feed roller and the pinch rollers, the printer acknowledges the presence of paper. To bring the paper to the print start position, press the RESUME button. The paper feed roller driven by the paper feed motor will feed in the paper to its set position. b) Printing/Paper delivery section The printing section consists of the paper feed roller, the pinch rollers on the platen and the carriage. Each part is responsible for ensuring that a certain head-to-paper distance is maintained. The paper delivery operation section consists of the eject roller and spurs that deliver the printed paper. Paper set to the print start position by the paper feed roller and the pinch rollers will be printed over the platen and delivered by the eject roller and the spurs. This printer has a sensor that detects if paper has been delivered correctly. Do not attempt to back feed paper through the paper delivery slot as this may damage the sensors. Spurs Paper Feed Roller Printer Delivery Sensor Paper Feeding Direction Eject Rollers Pinch Roller Paper Sensor Figure 4-23 Paper Pass 4-30 Part 4: Technical Reference BJC-50 c) Automatic head-to-paper adjustment A coil spring pushes up the eject idle roller and the eject roller towards the paper feed roller and the spurs to maintain a constant head-to paper distance regardless of paper thickness. Hence, a paper thickness lever is not necessary and there is no need to adjust the carriage position according to paper thickness. 4-31 Part 4: Technical Reference BJC-50 3.5 Carriage Section 3.5.1 Carriage section function a) Ink/BJ cartridge mounting function The carriage holds the BJ cartridge and connects it electronically to the control board through the carriage ribbon cable. When the power is off, the carriage is locked at the capping position where the carriage is locked by the lock arm. b) Carriage drive function The carriage is moved horizontally by the carriage belt, which is driven by the carriage motor. c) BJ cartridge maintenance function The printer performs the wiping operation and cleaning operation for the BJ cartridge by controlling the position of carriage. 1) Setting and releasing the wiper When the carriage moves horizontally, the wiper lever and the latch lever in the purge section are operated. 2) Start of the cleaning operation The BJ cartridge cleaning starts when the carriage moves horizontally and the trigger gear is engaged with the paper feed gear to drive the pump gear. Wiper Lever Latch Lever Cap Paper Feed Double Gear Toriger Gear Paper Feed Gear Wiper Pump Gear Cylinder Gear Pump Carriage Figure 4-24 Cartridge Section Function 4-32 Part 4: Technical Reference BJC-50 3.5.2 Carriage section structure a) BJ cartridge mounting section The BJ cartridge is fixed to the carriage by the carriage contact spring. When the BJ cartridge is mounted on the carriage, the contacts of the carriage ribbon cable connect with the signal contacts of the BJ cartridge to transfer printing signals sent from the control board. There are wiping hooks that set and release the wiper on the back of the carriage. There also is a home position edge that shields the home position sensor on the chassis on the back of the carriage. b) Carriage drive section The power from the stepping type carriage motor moves the carriage horizontally with the carriage belt. After the home position sensor attached to the rear of the carriage detects the home position edge, the carriage is controlled with the stepping pulses transmitted to the carriage motor. The pulses driving the carriage motor are controlled by the MPU section to have the optimum pulse width. (PWM control) This reduces the operating noise. Also, if the print position is shifted mechanically, it is corrected automatically, the home position sensor detects the home position edge on the carriage, and the print start position is shifted with software. This adjustment is conducted when the initial operation is performed after the printer is powered on by the POWER button, or when the printing operation is performed after the print mode is changed. Carriage Ribbon Cable Home Position Edge Contact Point Carriage Belt Cartridge Lock Hook Wiping Hooks Figure 4-25 Carriage Section Structure 4-33 Part 4: Technical Reference BJC-50 4. PRINTER ELECTRICAL SYSTEM 4.1 Overview The electrical system is handled by the control section and the power supply section. The printer control section converts the data from the computer into print signals or printer operation signals and drives the BJ cartridge and motors while monitoring the status of the sensors. The power supply unit converts the AC power to DC output using the Universal adapter and converts it into drive power for the motors, IC, head etc. This drive power is also used in the recharging circuit to recharge the lithium ion battery. Lithium Ion Battery AD360u 24V Universal Adapter 32.768KHz +5V DC-DC POWER EEPROM DC-DC RTC SW Battery Recharge Controller IC CAR- REPOWER CHARGE Error TRIDGE SUME SW LED LED LED SW +13V Flash ROM 4Mbit Beeper A S I C MPU Section Font ROM 8Mbit DRAM 4Mbit Parallel IF Host Computer IrDA Module Host Computer Printer Controller Section CR Motor Driver Paper Feed Motor Driver CR Motor Paper Feed Motor 23.04 24 MHz MHz Control Board Connector for Option Carriage Home Paper Delivery Position End Sensor Sensor Sensor BJ Cartridge Scanner Cartridge Option Unit Figure 4-26 Printer Block Diagram 4-34 Part 4: Technical Reference BJC-50 4.2 Signal Control Section 4.2.1 Control board block diagram Paper Feed Motor Paper Feed Motor Driver Lithium Ion Battery Recharge Circuit A21 P63~P67 A: Printer Internal Temperature Head Rank Head ID Head Temperature A CR Motor IrDA Delivery Sensor B Analog Switch Carriage Motor Driver PA1~PA3 P70~73 AD0~AD3 WHEAT MCHE BENB HENB IFD0~7 BUSY RXD,TXD MODE Parallel I/F B: Voltage Input Recharging Battery Voltage Recharge Current Battery Temperature BJ Cartridge Scanner Cartridge FIRRXD Charge LED CSSEL POWER SW POWER LED EEPROM (IC6) P64 Beeper P83 P87 A S I C SNM1 RTC 32.768KHz LPB1 Error LED P65 RESUME SW CARTRIDGE SW 23.04MHz P64 Home Position Sensor LPB2, 3 MD0~15 MA0~9 A 1~21 IO 0~15 A 0~19 AD 0~16 D 0~15 CE 1 P55 24MHz DRAM 4Mbit Paper End Sensor A 0~15 Flash ROM/Font ROM 4Mbit / 8Mbit Figure 4-27 Control Board Block Diagram 4-35 Part 4: Technical Reference BJC-50 4.2.2 Control section components a) ASIC (IC6) The ASIC is comprised of the MPU section and the printer controller section. It has a built-in 16-bit CPU and the operating synchronized frequency is 23.04 MHz. The printer controller's operating synchronized frequencies are 23.04 MHz and 24.00 MHz. The MPU section and the printer controller section operate in synchronization. 1) MPU Address bus The 21-bit address bus ports is connected to an 4 M-byte flash ROM and 8 M-byte FONT ROM. The flash ROM/FONT ROM synchronizes with the read signals output by the MPU and the 23.04 MHz clock signal. The printer controller then selects the chip. Data bus Like the address bus, the 16-bit data bus port is connected to the 8 M-byte FONT ROM. Stepping motor controller The stepping motor controller outputs the carriage motor micro-step control signals and paper feed motor's double-phase exciter drive signals and single-and double-phase exciter drive signals. Interrupt controller For external interruption, the MPU has POWER button on/off switch, data reception, initial interrupt request and other signals. Each signal is inputted to each port and interrupt processing is executed. A/D converter The following analog signals are detected by the built-in A/D converter. The signals from four A/D ports are divided into two groups (A and B) with 4 signals per group. Use the external analog switch to select a group. A/D port AD0 AD1 AD2 AD3 Group A Head ID Head Temperature Head Rank Printer Internal Temperature Group B Voltage input Recharging Battery Voltage Recharge Current Battery Temperature Use the output LPC2 as the analog switch. All inputs will be connected to the A/D port of ASIC when LPC2 is set to either "0" for Group A or "1" for Group B. EEPROM write/read control The TE-CLK signal output from the ASIC is EEPROM's clock signal. The recorded data in the EEPROM is read using the TOE signals. The read-out data is output from the ASIC by the TEDIO signals and written on the EEPROM using EDO signals. I/O port The following signals are inputted to the input port: (i) signals from the POWER, RESUME and CARTRIDGE buttons and (ii) EEPROM read signals. The output signals outputs flash ROM rewrite signals and recharge LED ON/OFF signals. 4-36 Part 4: Technical Reference BJC-50 2) Printer controller section The printer controller contains the parallel interface controller, print head controller, scanner head controller, CR motor controller, paper feed motor controller, buffer controller, DRAM controller, recharge controller, etc. It operate in synchronization with an external 23.04 MHz external clock input. Interface controller The interface controller receives from the computer, 8-bit parallel data which is synchronized with the data strobe pulse (STROBE) through the BUSY/ACKNLG handshake. It also controls IrDA and ASK interface signals. The data received through the interface is stored in the DRAM's receive buffer and analyzed by the ASIC. DRAM controller The DRAM controller is a DRAM-specific bus separate from the MPU section bus. It controls the 4 M bit DRAM's 10-bit address/16-bit data bus and also executes read/write control, RAS/CAS control, and refresh control. Buffer controller The buffer controller automatically writes the received data to the receive buffer on the DRAM, manages the receive buffer's remaining capacity, automatically reads the print buffer, and clears the data after it is read. Print head controller The print head controller converts the print data read from the DRAM's print buffer from parallel to serial and sends the serial data to the print head. For large and small dot printing, the print head controller outputs 4 heat-enable signals (HENBA, HENBB, HENBC and HENBD). Each enable signal can be output independently. Scanner cartridge controller The scanner cartridge controller tries to operate the printer as a scanner once it receives a scanner activation message from the host computer. In the scanner mode, data cannot be removed from the receiver buffer. Recharge controller The recharge controller controls the battery recharge controller IC which is driven by the recharging electrical current, temperature and voltage values transmitted through the A/D port. I/O port The input port contains the home position sensor, the delivery sensor, the paper end sensor, and a data input signal for the optional ASF unit. The output port controls the beeper, ERROR LED on/off signals, battery recharge on/off signals, battery power output on/off signals, A/D port analog switch signal, CR exciter motor, drive signals and a data output signal for the optional ASF unit. b) Flash ROM/FONT ROM (IC9/IC10) This printer has a flash ROM as the control board lacked space for an EPROM. The 4 M-byte flash ROM contains printer control programs and program-rewrite loading programs. The 8 M-byte FONT ROM contains the bitmap font data for printer control. 4-37 Part 4: Technical Reference BJC-50 c) DRAM (IC4) Controlled by the ASIC, the 4 M-bit DRAM is used as a receive buffer, download buffer, print buffer, and working area. d) Paper feed motor driver IC/Carriage motor driver IC (IC15/IC16/IC12) The paper feed motor driver IC (IC15/16) is a constant-voltage bipolar driver IC. There are two types of signals that are outputted from the ASIC: a paper feed motor drive control signal and a head drive control signal. The motor signal output from the ASIC supplies a constant voltage to each motor phase to control paper feed motor drive. Also the low voltage output to each terminal controls the head drive. The carriage motor drive IC (IC12) is a constant-voltage bipolar driver IC. It is controlled by the motor signals output from the ASIC that supplies a constant voltage to each phase. e) EEPROM (IC14) Controlled by the ASIC, the EDO, TE-CLK and TIDIO signals, the EEPROM data is read into the ASIC when the hardware/software is powered ON. The data is written onto the EEPROM when the hardware/software is powered OFF. The data stored in the EEPROM waste ink absorption amount, fed sheets, BJ cartridge installation and removal frequencies, function settings, etc. f) Battery Recharge Controller IC (IC2) In the early stages of recharging, the battery recharge controller first controls the supply of constant electrical current from the Universal adapter until the set voltage is reached. This constant current is set to 400 mA. Once the voltage rises to a predetermined value, the controller switches to maintain a constant voltage. Full charge is detected by the controller when the recharge current starts to decrease as it reaches full capacity. Maximum recharging time is set to 6 hours and recharging is automatically stopped beyond 6 hours as the soft timer keeps track of the total recharging time. 4-38 Part 4: Technical Reference BJC-50 4.3 Power Supply Section 4.3.1 Block diagram of power supply section Connector AC CNDC 1 Universal Adapter 13.5 Vdc Vpp Output Supply the power to motor and beeper Protective Circuit Step-down Transformer Noise Filter DC/DC Converter Fuse (4.0A) V2- ON Vcc2, Vcc3 V3- ON ON/OFF Circuit Vcc 1 Output (5.1±0.25Vdc) Vcc 2 Output (5.0±0.25Vdc) Vcc 3 Output (5.0±0.25Vdc) CNBT Lithium Ion Battery 10-14.3Vdc Recharge Circuit Step-up Transformer CHG- ON VH- ON DC/DC Converter Reset Circuit Battery Shutdown Control Circuit Voltage Level Detection NMI P85 LPC 0 V2 V3 VHON ON ON DC LEV RESET ASIC (IC6) Vcc Vcc1 PWRON Power button Figure 4-28 Block Diagram of Power Supply Section 4-39 VH Output (24.12±0.35Vdc) Part 4: Technical Reference BJC-50 4.3.2 Power supply section structure a) Input power supply The voltage input to the power supply section is 13.5 ± 0.5 VDC. It is supplied by two sources: the Universal adapter and the lithium ion battery. When the DC plug is inserted into the power connector, 13 VDC is supplied to the power control section on the control board. b) Vcc1 output The Vcc1 is +5VDC output produced by the DC/DC converter. Vcc1 is supplied to operate the reset IC, ASIC, ROM, RAM, timer IC, EEPROM, and as a pull-up power supply for the POWER button. It is always supplied, even after the power switch is OFF. c) Vcc2 output The Vcc2 (+5VDC) output controlled by the ASIC is used to operate the IC in the print head. The ASIC outputs a signal that turns Vcc2 output off to stop it when the BJ cartridge is replaced, the ink cartridge is replaced, or the printer is turned OFF with the POWER button. d) Vcc3 output The Vcc3 (+5VDC) output controlled by the ASIC is supplied to operate the interface, paper sensor, and HP sensor. When the POWER button is turned OFF with the POWER button, the ASIC stops the Vcc3 output. e) Vpp output The DC input voltage supplied from the Universal adapter or lithium ion battery becomes Vpp output to drive the carriage motor driver and the paper feed motor driver. f) VH output The VH (24.12 VDC ± 0.35 VDC) output generated by the DC/DC converter is supplied to the print head and the paper feed driver. This is monitored by the ASIC. The VH output voltage is supplied to the subheater temperature adjustment driver transistor and the nozzle heater temperature adjustment drivers transistor in the BJ cartridge and the paper feed motor driver. The DCLEV, which is generated by dividing the VH output using a DC/DC converter, is fed back to the ASIC and the ASIC monitors the VH output voltage to be kept at approx. 24.12 VDC. 4-40 Part 4: Technical Reference BJC-50 4.3.3 Lithium Ion Battery Recharging Circuit Vpp Pre-recharging Circuit Lithium Ion Battery Pack Vpp Constant Current/Voltage Recharging Circuit C Vcc1 Vcc1 Constant Current/ Voltage Recharge Control IC ASIC CHG-ON T Battery Temperature ICP2 Charging Current Detection Amplifier CHGLEV Battery Voltage Detection Circuit BATLEV Vpp Input Voltage Detection Circuit Figure 4-29 Lithium Ion Battery Recharge Circuit 4-41 DCLEV Part 4: Technical Reference BJC-50 a) Pre-recharging Circuit When the lithium ion battery voltage is low, the pre-recharging circuit and small amounts of electrical current are used to raise the voltage. Once the voltage level rises to the normal level, this circuit is stopped. b) Constant Current/Voltage Recharging Circuit Constant current is maintained until the lithium ion battery voltage reaches 12.3 V. Once it reaches 12.3 V, the control mode switches to constant voltage to maintain a stable 12.3 V supply. When the voltage is less than 6 V, the ICP2 blocks recharging and the battery will not start recharging even after receiving a charge ON signal. 4.3.4 Lithium Ion Battery a) Properties of the lithium ion battery Advantages of a lithium ion battery are the high concentration of electrical energy, high rate of charge preservation and no memory effect. Also, it contains no toxic compounds such as cadmium, lead or mercury. However, once the battery is over discharged beyond zero charge, the battery may deteriorate rapidly. Under high temperatures, self-discharge is accelerated and this may lead to rapid over discharge. Chances of reviving an over discharged battery that was left unused for an extended period of time is very slim. Over discharge can be prevented by regularly charging the battery. The battery must not be stored in high temperature places. b) Recharging mechanism The recharging circuit for the battery is found on the printer. With power supply from the Universal adapter, the battery is charged using the constant current/constant voltage recharging process. The battery is recharged automatically when the printer is either OFF or ON but in stand-by. When a BJ cartridge is installed, recharging will take place only if the BJ cartridge is capped. In other words, recharging will stop temporarily during printing or when the cartridge is uncapped. When the scanner cartridge is installed, recharging takes place when the scanner driver is not operating. The voltage of the Lithium ion battery cannot be measured directly. Low charge is indicated by the charge indicator lighting green when the battery is installed in the printer and the Universal adapter is plugged. 4-42 Part 4: Technical Reference BJC-50 c) Battery temperature detection The thermistor inside the lithium ion battery pack measures the internal battery temperature and detects whether the battery is installed or not. This thermistor is connected between the T terminal and negative terminal of the battery pack. ASIC uses the A/D value of the thermistor's output voltage, THBAT, to determine whether the battery temperature is normal. If it is, the recharging will begin. TABLE 4-4 BATTERY TEMPERATURE Battery temperature THBAT -30¡C ³ THBAT 0¡C ³ THBAT 0¡C ³ THBAT 45¡C ³ THBAT>0¡C THBAT > 45¡C THBAT > 60¡C A/D value Determination by THBAT 965~1024 No battery 814~1024 Cannot start recharging 835~1024 Recharging stop 408~813 Permission to start recharging 0~407 Cannot start recharging 0~336 Recharging stop Lithium Ion Battery Pack IC 11 Vcc1(+5V) IC 6 C ASIC Analog Switch T AD 3 THBAT Thermistor ICP 2 Figure 4-30 Battery Temperature Detection Circuit 4-43 Part 4: Technical Reference BJC-50 5. DETECTION FUNCTION The printer uses HP sensor, paper end sensor, delivery sensor, inside temperature sensor, and head temperature sensor. Also, the capacity of the waste ink absorber is stored in the EEPROM. When the absorber is about to become full a warning is given and when full an error will occur. The printer detects the level of the ink remaining in the ink cartridge by counting the number of dots ejected, and indicates when the ink runs out. The ink remaining detection function operates only when the setting for the BJ controller is ON. 5.1 HP Sensor The photointerrupter type HP sensor detects the edge of the carriage in order to detect the carriage position. After the carriage senses the edge, it moves to the right, and the print head is capped at its home position. 5.2 Paper End Sensor The switch type paper end sensor detects the presence of paper. 5.3 Delivery Sensor The switch-type sensor detects whether paper has been delivered. 5.4 Temperature Sensor The temperature sensor on the control board detects the temperature inside the printer. The ASIC detects a change in the thermistor resistance that changes along with changes of the inside temperature. The ASIC converts the input analog value, which is a voltage converted from the thermistor resister to a digital value with the internal A/D converter. This value is used to control the pulse width of the head drive control signal and temperature adjustment signal. 5.5 Head Temperature Sensor The head temperature sensor in the print head detects the head temperature. The ASIC detects the diode sensor that changes as a change in voltage along with changes in the head temperature. The ASIC converts the input analog value to a digital value with the internal A/D converter. When the head temperature rises excessively, the digital value becomes large, which can stop ejecting the ink from the head. TH1 HP Sensor Delivery Sensor Paper End Sensor Figure 4-31 Sensor Location 4-44 Part 4: Technical Reference BJC-50 5.6 Waste Ink Level Detection Ink ejected by the maintenance jet or collected from purging during recovery is absorbed by the waste ink absorber. The total amount of ink consumed is calculated by adding the number of dots ejected and the recovery counts. The EEPROM waste ink counter is divided into the following sub-counters: Maintenance counter ng counter Purge counter (for non-volatile substance) 10 mg counter Purge counter (for volatile substance) 10 mg counter During the various types of maintenance operations, the dots ejected are counted and recorded in the ng counter. When the ng counter exceeds 100,000,000 ng (100 mg), 50 mg will be added to each of the non-volatile and volatile counters. During the various types of recovery, all the ink drawn from the print head is read and recorded separately as non-volatile and volatile counters. All recordings for volatile substances are calculated based on the elapsed time. Amount less than 10 mg will be recorded in the ng counter. Volatile Substance = Evaporated amount × (1-25/non-volatile material) When the reading for the ng counter and 10 mg counters reach the 84000 mg limit, an WASTE INK ABSORBER error will occur, causing the printer to stop. 5.7 Remaining-ink Level Detection This function detects the remaining ink level and notifies the user that the ink has run out. (The function is enabled or disabled by the BJ controller.) The dot counter for each color of ink in the ASIC counts the number of dots ejected. When cleaning is performed, ink is consumed by purging, and the total number of dots and recovery counts is written into the EEPROM. When the power is turned off, paper is delivered out, or cleaning operation ends. The ASIC reads the EEPROM contents when the printer is turned on with the POWER button. If the remaining ink level reaches the prescribed value, a caution will appear, notifying the user that the ink is low (the printer can operate even after a caution is displayed). Change the settings in the original printer driver to the replacement mode before replacing an ink cartridge. The driver will reset the ink counter. TABLE 4-5 DETECTION FUNCTION Detection Function Paper Paper delivery Home position BJ cartridge Description Detection with paper end sensor Detection with delivery sensor Detection with home position sensor Detection with head rank and head temperature sensor Ink cartridge Remaining ink Availability Available Available Available Available Remarks Not available Calculation from dot count and recovery count (Set the function to on/off by function setting) Identification by head ID0 and ID1 BJ cartridge identification Waste ink Calculation from dot count and recovery absorption count Lithium ion battery Detection by thermistor inside the battery 4-45 Available Available Available Available Default: OFF Part 4: Technical Reference BJC-50 6. SCANNER CARTRIDGE 6.1 Scanner Cartridge Overview The scanner cartridge is a replaceable scanner unit that carries a one-line 128 pixel BASIS. The scanner separates each of the three RGB primary colors of the LED by scanning the same line three times. The color image is output by 8-bit signals, 256 gradation in each RGB primary color. For a monochrome image, the image is lit with a green LED and scanned once to output either a 8-bit or 2-bit signal. The maximum scanning resolution is 360 dpi × 360 dpi. The light source LED within the scanner lights up and illuminates the document on the platen. The light rays hit the image and using an imaging lens the reflected light rays are converged onto the BASIS. The converged light rays are converted to analog signals by the BASIS. After the analog signals have been converted to digital signals by the scanner controller, the scanned image is processed and the image data is sent to the computer via the printer's Centronics interface. Light Emitting Section M A D E IN JA PA N Light Receving Section Signal Contact Figure 4-32 Scanner Cartridge 6.1.1 Block diagram Printer Scanner Cartridge Scanner Controller Interface Control Image Processing +24V dc +5V dc A/D Converter (10 Bit) Analog Signal Control Sensor Control BASIS (Image Sensor) LED (R, G, B) Scanning Documents Figure 4-33 Block Diagram 4-46 Part 4: Technical Reference BJC-50 6.2 Scanner Cartridge Structure BASIS Slit Mirror 2 Field Lens Imaging Lens BASIS Mirror PCB Imaging Lens Field Lens Diffusion Board Illumination Lens LEDs Scanning Document Platen LED Diffusion Board Illumination Lens Figure 4-34 Scanner Cartridge 1) LED Red, green and blue LEDs are used to illuminate the scanning document. To Compensate for the low intensity of the red and green LED's, two red and green LEDs have been incorporated and a total of five LEDs are mounted on the scanner. Only the green LED is used for monochrome scanning. 2) Illumination lens This "D" shaped lens converges the light from the LED light source. 3) Diffusion board The light intensity of the LED is brighter at the center than at the ends. The diffusion board allows even distribution of light onto the document. 4) Field lens This lens prevents any magnification reduction caused by paper gaps when scanning a lifted or bent document. 5) Imaging lens This lens is used for forming an image of the light rays converged by the field lens onto the BASIS. 6) Shading board The shading board with a slit at the front surface of the BASIS is used to prevent crosstalk generated in areas adjacent to high contrast areas. 7) BASIS The scanner cartridge uses a semiconductor type, one-line 128 pixel BASIS (BaseStored Image Sensor). Depending on the light amount of the image formed on the BASIS, electric voltage signals are sent to the scanner controller as image signals. 4-47 Part 4: Technical Reference BJC-50 8) Scanner controller The scanner controller is an IC that controls the BASIS and processes the analog signal output from the BASIS. The scanner controller also controls the following image processing: ¥ Black level Correction The black level is set to maximum BASIS output. ¥ A/D Converter The A/D converter converts the image signals to 10 bits image data. ¥ Shading Correction The variation of the image signal is corrected by the shading correction. Due to (i) the variation of the sensivities of the BASIS sensor elements and (ii) the uneven distribution of light transmitted through the center and the periphery of the lenses, the intensity of each scanned line is not uniform. The scanned data is compared against a standard white data to even out and correct the density. ¥ Carriage Scanning Direction Resolution Converter The carriage scanning direction resolution converter converts the resolution of the output in the scanning direction according to the carriage direction. ¥ Edge emphasis ¥ Binary image processing function The scanner controller has a built-in SRAM used for output buffer memory. Scanner cartridge cannot be disassembled, reassembled. As the imaging lens is used for forming an image on the BASIS, it is moved from its fixed position to adjust the optical path for focusing. Focusing cannot be conducted during servicing. 4-48 Part 4: Technical Reference BJC-50 6.3 Signal Contacts The scanner cartridge is recognized by TOP.S, DIAS and CCHK signals. The scanned image output to the printer is transmitted with a SCLOCK signal in sync with a SDATA signal. The scanner is controlled by the internal register setting signals, CMD0, 1, 2 and 3. 29 28 20 27 26 25 24 21 22 23 19 18 17 16 15 3 11 12 13 14 10 9 4 8 7 6 5 2 1 Scanner Cartridge Figure 4-35 Contact Pad Layout TABLE 4-6 LIST OF SCANNER CARTRIDGE SIGNAL CONTACTS No. 1, 2 5, 6 9 10 11 Signal LAMP G V LAMP TOP. S C. CHA ID0 Type ... IN OUT OUT OUT 12 ID1 OUT 13 14 19 20 21 22 23 24 25 26 28 29 INKS 2 Vss COM 0 (REN) COM 1 (RWR) COM 2 (RDT) COM 3 (N.C) Vdd S CLOCK (DTCK) S SYNE (LNST) S RES S DATA (DT) C. CHK OUT GND IN IN IN ... ... OUT IN IN OUT OUT Description GND for LED LED drive voltage (+24Vdc) Scanner detection GND Scanner detection OPEN Color scanner cartridge acknowledge signal Color scanner cartridge acknowledge signal IS-11/IS-12 detection GND Register enable Register write clock signal Register data signal Not used IC driver voltage (+5Vdc) Scan data transfer signal Line start signal System reset signal Scan data HScanner detection OPEN 4-49 (Ref. BJ Cartridge) VHG HVH TOP DIODEA ID0 ID1 Ñ HVss Odd ENB BENB1 BENB2 BENB3 HVdd HCLK HLATCH HRES HDATA DIODEK Part 4: Technical Reference BJC-50 6.4 Scan Mode TABLE 4-7 LIST OF SCAN MODE Scanning Resolution (dpi) 360 300 200 200 180 90 × × × × × × 360 360 360 180 180 90 Scanning Image Pixel Width Color Black & White Multi Value Multi Value Binary 48 dots 48 dots 128 dots 64 dots 64 dots 128 dots 64 dots 112 dots 128 dots 64 dots 128 dots 128 dots 64 dots 128 dots 128 dots 64 dots 128 dots 128 dots Carriage Speed 3.91 3.91 3.91 6.43 6.43 7.81 KHz KHz KHz KHz KHz KHz 6.5 Calibration The process of sampling and collecting data such as the printer's internal temperature, black standard data and white standard data is referred to as calibration. The scanner application retains the past 5 calibration data and saves them in a file. When a scanning operation is performed, a value from the compiled temperature data that is within ±5ûC of the printer's internal temperature at the time is downloaded to the scanner controller. The scanner application requests calibration when there is no compiled data within ±5ûC. 4-50 Part 5 MAINTENANCE Page 5- 1 5- 1 5- 1 5- 1 5- 2 5- 2 5- 3 5- 4 5- 5 5- 5 5- 7 5 -31 5 -31 5 -36 5 -37 5 -37 5 -38 5 -38 5 -41 1. MAINTENANCE 1.1 Periodically-replaced Parts 1.2 Consumables 1.3 Periodic Maintenance 2. SERVICE TOOLS 2.1 List of Tools 3. APPLYING THE GREASE 4. ADJUSTMENT 5. TROUBLESHOOTING 5.1 Overview of Troubleshooting 5.2 Error Condition Diagnosis 6. CONNECTOR POSITION & PIN ALIGNMENT 6.1 Control Board 6.2 Carriage Ribbon Cable 6.3 BJ Cartridge 6.4 Scanner Cartridge IS-12 7. CIRCUIT DIAGRAMS 7.1 Parts Layout 7.2 Circuit Diagrams Part 5: Maintenance BJC-50 1. MAINTENANCE 1.1 Periodically-replaced Parts Level User Service engineer Periodically-replaced parts None None 1.2 Consumables Level User Service engineer Consumables BC-10 BC-11e BCI-10 Black BCI-11 Black BCI-11 Color LB-50 Black BJ cartridge Color BJ cartridge Ink cartridge Lithium ion battery None 1.3 Periodic Maintenance Level User Service engineer Periodic Maintenance None None 5-1 Part 5: Maintenance BJC-50 2. SERVICE TOOLS 2.1 List of Tools General tool Phillips screwdriver Flathead screwdriver Multi Mater Tweezers Special tool Grease (CK-0562-000) Use For For For For removing screws (M2.6) removing plastic parts troubleshooting fitting and removing flexible cables Use MOLYKOTE PG-641 5-2 Part 5: Maintenance BJC-50 3. APPLYING THE GREASE The points to grease with a special tool are shown below. Apply a thin coat of grease to the specified points. See the Part Catalog for details of the printer disassembling and reassembling procedures. Take special care not to apply grease to the wiper or the cap when greasing the guide shaft. Carriage Shaft Guide Rail Figure 5-1 Grease Application Sections 5-3 Part 5: Maintenance BJC-50 4. ADJUSTMENT No parts need to be adjusted. 5-4 Part 5: Maintenance BJC-50 5. TROUBLESHOOTING 5.1 Overview of Troubleshooting 5.1.1 Definition Troubleshooting consists of error condition diagnosis, which is required if the cause of an error is unknown, and error recovery, which is performed if the cause of an error is known. If the cause of an error is unknown, perform the error condition diagnosis, and if it is known, perform error recovery. 5.1.2 Precautions for troubleshooting 1. Before starting error condition diagnosis, make sure all the connectors and ribbon cables are plugged in. 2. If you repair the printer with its case removed and the Universal adapter or battery pack installed, take utmost care to prevent electric shock from the power supply unit and PCB shorting. 3. Troubleshooting procedures are given in flowcharts. The following symbols are used in the flowcharts: Start/End Operation Judgement Action/Replace Jump Stop 4. After replacement or repair, do a test print to make sure the printer works properly. If the printer does not work properly, perform troubleshooting again, skipping the steps that were done before. Example 1 Clean the spurs in the paper delivery unit. Do a Demo pattern print. Hold down the POWER button until the beeper sounds once and manual feed a sheet of paper. Press the RESUME button to start Demo pattern print. Do a test print. Is there any spur mark? Yes Replace the print unit. No END • Spur or the carriage is defective. 5-5 Part 5: Maintenance BJC-50 5. Several measures may be described in the error condition diagnosis and error recovery. They are shown in each step to be done to solve the problem. Do a test print after completing each step to make sure the problem has been eliminated. If it persists, go to the next step. Example 2 After replacing the control board in step 1, carry out a test print to make sure the problem has been solved. If it still persists, go to step 2 and replace the print unit. Remove and reinstall the battery Is an error displayed? Yes No END 1. Replace the control board. 2. Replace the print unit. • The recharging circuit is defective. • The battery installation part is defective. 6. After troubleshooting, make sure that all the connectors have been plugged back in correctly and that all the screws are tight. When replacing the control board, check the quantity of waste ink absorbed in the waste ink absorber in the printer base unit, and reset the quantity of waste ink absorbed in the EEPROM. See Part 3: 3.6 EEPROM Data Setting (page 3-23). 5-6 Part 5: Maintenance BJC-50 5.2 Error Condition Diagnosis 5.2.1 Diagnosis flowchart Indicators When DC power is supplied : Lights : Blinks START : Does not light Leave the lithium ion battery installed. Insert the DC jack of the universal adapter. Is the printer in the factory mode? Yes Specify that the printer enters the factory mode at power on and write it into the EEPROM. No • RAM check • ROM check Correct? No Yes • RAM error • ROM error The error code is displayed when the power is turned on with the POWER button. Recharging check POWER Correct? ERROR RAM ERROR : 2 beeps ROM ERROR : 1 beep No Yes Start recharging the battery • Failed recharging circuit error If an error occurs, the printer stops to operate when the power is turned on with the POWER button. END POWER ERROR ERROR : 12 beeps POWER ERROR/CHARGE The ERROR/CHARGE indicator lights green while battery is recharging 5-7 Part 5: Maintenance BJC-50 When the power is turned on with the POWER button START Press the POWER button. POWER indicator blinks. • RAM check • ROM check Correct? No Yes • RAM error • ROM error POWER ERROR RAM ERROR : 2 beeps ROM ERROR : 1 beep Read the hardware power-on time, software power-on time, and cap close time from the EEPROM. Check the inside temperature sensor. Correct? No Yes Thermistor error POWER Is the test print button pressed? No ERROR 6 beeps Read the low battery value from the EEPROM. Yes When the POWER button is pressed, do the selected test print after initialization. Next page 5-8 Part 5: Maintenance BJC-50 Previous page Check the waste ink capacity. Correct? No Yes If it is 84000mg or higher, waste ink full error. If it is 83160mg, waste ink capacity warning. Check the battery voltage. Warning POWER ERROR 5 beeps Battery OK? Error ERROR POWER 5 beeps No Yes When using battery: If the input voltage is 10.0Vdc or lower, low battery error. If the input voltage is 10.5Vdc or lower, low battery warning. Initialize the paper feed motor Warning Error Open the cap. POWER ERROR 4 beeps Move the carriage to its home position. Is the home position detected? No Home position error Yes POWER ERROR 4 beeps Set the print position conection value Detect the print position correction value. Is it detected? Yes No Print position correction detection error Maintenance jet POWER ERROR 7 beeps Next page 5-9 POWER ERROR Beeper : Long once Short once Part 5: Maintenance BJC-50 Previous page Feed out the paper in the printer. Is the paper fed out? No Yes Paper output error. ¥ Detected by the paper delivery sensor Check condition for automatic recovery operation. ERROR POWER 2 Beeps Check battery voltage. Correct? No Yes If it is 6.5V or lower, battery failure warning. Warning Detect internal temperature ERROR POWER 6 beeps Print head temperature adjustment control starts. Is a BJ cartridge installed? Yes No Move the carriage to the head replacement position. POWER ERROR 3 beeps The POWER Indicator lights. END 5-10 Part 5: Maintenance BJC-50 5.2.2 Error recovery a) Error display 1. ROM Error <Cause> During initialization, the content in ROM cannot be read. <Suspected parts> Flash ROM/FONT ROM <Measure> Replace control board. 2. RAM Error 3. EEPROM Error <Cause> RAM reading and writing cannot be done properly. <Suspected parts> DRAM <Measure> Replace control board. <Cause> EEPROM reading and writing cannot be done properly. <Suspected parts> EEPROM <Measure> Replace control board. When a ROM or RAM error occurs, the correct error may not be displayed. When replacing the control board, check the amount of waste ink absorbed by the waste ink absorber and reset the EEPROM in the printer base unit. See Part 3: 3.6 EEPROM Data Setting (page 3-23). 5-11 Part 5: Maintenance BJC-50 4. Home Position Sensor Error <Cause> The home position sensor cannot detect the carriage. <Suspected part> Home position sensor, carriage motor, paper feed motor, control board <Measure> • Visually check for disconnected gears, removed parts, deformation, or jammed paper. Visually check the carriage drive unit operation. Correct? Figure 5-2 Check Point Yes No Repair defective parts or replace the print unit. Visually check the carriage motor and paper feed motor operation. Correct? No Yes 1. Check the home position sensor. 2. Replace the control board. Next page When replacing the control board, check the quantity of waste ink absorbed in the waste ink absorber in the printer base unit, and reset the quantity of waste ink absorbed in the EEPROM. See Part 3: 3.6 EEPROM Data Setting (page 3-23). 5-12 Part 5: Maintenance BJC-50 Previous page Check the carriage motor and paper feed motor. Carriage Motor 5 4 3 2 1 Meter connection Reading 1-2 CNCR Approx. 8.3Ω 3-4 Pin No. • Disconnect the carriage motor connector from the control board before check. Figure 5-3 Carriage Motor Paper Feed Motor 4 3 2 1 Meter connection Reading 2-5 CNLF Approx. 70Ω 3-4 Pin No. • Disconnect the carriage motor connector from the control board before check. No Correct? Figure 5-4 Paper Feed Motor Yes Replace the print unit. • The carriage motor or paper feed motor is defective. Replace the control board. When replacing the control board, check the quantity of waste ink absorbed in the waste ink absorber in the printer base unit, and reset the quantity of waste ink absorbed in the EEPROM. See Part 3: 3.6 EEPROM Data Setting (page 3-23). 5-13 Part 5: Maintenance BJC-50 5. Print Position Correction Detection Error <Cause> Print position correction cannot be detected properly. <Suspected part> Carriage motor, control board,home position sensor <Measure> Same as when the home position sensor error is displayed. <Cause> The voltage of the lithium ion battery is incorrect. 6. Low Battery Error (10.0Vdc or lower) <Suspected part> Lithium ion battery, Universal adapter, Control board <Measure> Start recharging for universal adapter? No Yes 1. Replace the universal adapter. 2. Replace the control board. Recharge battery. Is an error displayed? No Replace the control board. Yes Replace with another battery. Start recharging? No Yes Leave the battery in optimal temperature for a while and try recharging it. END 7. Thermistor Error <Cause> The thermistor is faulty. <Suspected part> Thermistor <Measure> Replace the control board. 5-14 Part 5: Maintenance BJC-50 8. Head Temperature Error <Cause> The head temperature has risen excessively. <Suspected part> BJ head or control board <Measure> Switch the power off and leave the printer for several minutes. • Do not touch the head because it can be too hot. Remove and reinstall the BJ cartridge. Switch the power on. Is any error displayed? No Yes END • Check whether the carriage ribbon cable, paper feed motor cable, carriage motor cable, control board cable are plugged in the connectors. Check connectors. Correct? No Yes Repair defective parts. Next page 5-15 Part 5: Maintenance BJC-50 Previous page Check the BJ head temperature sensor resistance. DiA DiK 10 29 Meter connection Reading + Ð 10 29 Conductivity Pin No. 29 10 No conductivity The black BJ cartridge and the color BJ cartridge have the same meter connections and meter readings. Figure 5-5 BJ Head Temperature Sensor No Correct? Yes Replace the BJ cartridge. 28 29 24 25 26 23 22 21 20 Check the carriage ribbon cable. 27 16 17 18 19 15 14 13 12 11 3 7 8 9 10 5 6 4 1 2 • Check the conductivity of Pins 10,29 and 11. 29 1 Figure 5-6 Carriage Ribbon Cable Correct? No Yes Replace the print unit. Replace the control board. 5-16 • The carriage ribbon cable is defective. Part 5: Maintenance BJC-50 <Cause> The BJ cartridge is removed from a position other than 9. No Head Error the BJ cartridge removal position. <Suspected part> BJ cartridge or control board <Measure> Remove the top cover and reinstall the BJ cartridge. Is an error displayed? No END Yes 1. Replace the BJ cartridge. 2. Replace the control board. 10. Waste Ink Full Error <Cause> The capacity of waste ink absorbed into the waste ink absorber reaches 100%. <Suspected part> Waste ink absorber or control board <Measure> Check the waste ink absorber visually. 75% or more? Yes Replace the printer base unit. • Check how much waste ink is contained in the waste ink absorber. No 1. Set the waste ink absorption capacity in the EEPROM. 2. Replace the control board. • Reset EEPROM setting. 5-17 • See Part 3: 3.6 EEPROM Data Setting. Part 5: Maintenance BJC-50 11. Failed Recharging Circuit Error <Cause> The recharge current exceeds the standard value. <Suspected part> • Control board. • The contact points between the lithium ion battery and the printer. <Measure> Remove and reinstall the battery. Is an error displayed? Yes 1. Replace the control board. 2. Replace the print unit. No END • The recharging circuit is defective. • The battery installation part is defective. 5-18 Part 5: Maintenance BJC-50 12. Paper Feed /Delivery Error <Symptom> • Paper cannot be fed. More than one sheet is fed <Cause> at a time. • Paper is not loaded horizontaly. Paper is not output. The paper end sensor is defective. The paper feed roller does not work correctly. The paper delivery roller does not work correctly. Paper jam. The paper delivery sensor is defective. <Measure> Check the conditions for using the printer and printing paper specifications. Do they meet the specifications? No Use printing paper that meets the specifications. Yes Inspect the inside of the printer visually. • Paper jam • Deformed chassis, etc. • Missing gear teeth Correct? No Yes Does the printer feed paper correctly? Replace defective parts or eliminate paper jams. No 1. Replace the print unit. Yes 2. Replace the control board. Does any paper delivery error occur? Yes 1. Replace the print unit. 2. Replace the control board. • Print unit is defective. • The paper end sensor is defective. No END • The chassis is defective. • The delivery sensor is defective. 5-19 Part 5: Maintenance BJC-50 13. BJ Cartridge Check Error <Cause> This error appears when the carriage is returned to the home position without the BJ cartridge installed,or when presence of BJ cartridge is not recognized though it is installed. <Suspected part> Faulty contact between the BJ cartridge and carriage Faulty BJ cartridge Faulty carriage ribbon cable Faulty control board <Measure> Remove and reinstall the BJ cartridge Printer recognizes the BJ cartridge? Yes No 1. Replace the BJ cartridge. 2. Replace the control board. END <Cause> The BJ cartridge is not recognized correctly. 14. Cartridge Mismatch Error 15. No Battery Error The printer is set at scanner mode but the BJ cartridge is not installed. <Suspected part> Connection between the BJ cartridge and the carriage BJ cartridge Scanner cartridge Carriage ribbon cable Control board <Measure> • Replace the BJ cartridge. • Replace the scanner cartridge. <Cause> The lithium ion battery is not installed. <Suspected part> Lithium ion battery. Connection between the printer and the lithium ion battery. Control board. <Measure> • The lithium ion battery is installed. • Replace the lithium ion battery. 5-20 Part 5: Maintenance BJC-50 16. Failed Manual Feeding warning <Cause> The manual fed cut sheet is not inserted far enough into the printer for the paper feed roller to grab it. The paper end sensor detects the sheet but it is not fed into the printer. <Suspected part> Paper end sensor <Measure> • Pull out the sheet from the paper feeding slot. <Cause> The lithium ion battery voltage is less than 6.5V and it 17. Failed Battery Warning is not recovered by recharging. The recharging current is less than 40mA. <Suspected part> Lithium ion battery Control board <Measure> • Remove the faulty battery and replace it with either a new or recharged battery. • Replace the control board. 18. Waste Ink Capacity Warning <Cause> When the power is turned on or when recovery operation completes, the remaining capacity of the absorber is 840mg. <Suspected part> Waste ink absorber <Measure> • Press the RESUME button to recover. • If the capacity of waste ink in the waste ink absorber reaches 84000mg or higher, a waste ink error occurs. • Replace the printer base unit. <Cause> This warning appears when the voltage in the lithium 19. Low Battery Warning ion battery is less than 10.5V. <Suspected part> Lithium ion battery <Measure> • It can be recovered by pressing RESUME button within five minutes after the warning is displayed • If the voltage is not restored within five minutes after the warning is issued, the printer turns off automatically. • Recharge the lithium ion battery. 20. Cartridge Replacement Compulsory Completion Warning <Cause> This error appears when the carriage is left for five minutes at replacement positiion and the carriage is compursoly returned to the home position. <Suspected part> The BJ cartridge is in the replacement mode for five minutes or longer. <Measure> • Press the RESUME button to recover. • Press the CARTRIDGE button again and replace the cartridge. 5-21 Part 5: Maintenance BJC-50 21. Ink Low Warning The ink low warning is displayed when the ink low warning function is enabled in the exclusive printer driver. <Cause> Remaining ink in the ink tank is decreasing. The ink consumption calculated from the numbers of dots, maintenance jets, and cleanings exceeds the maximum ink consumption value, the beeper sounds twice, the POWER indicator lights and the ERROR indicator blinks. <Suspected part> Ink cartridge (Out of ink) <Measure> • Press the CARTRIDGE button to enter the replacement mode. After the beeper sounds once, the ERROR indicator will blink. Determine which ink tank is low by the blinking cycles. BCI-10/BCI-11 Bk: One cycle BCI-11 Color: Two cycles BCI-11 Color/Bk: Three cycles • After replacing the ink tank, reset the ink counter by selecting the ink replacement mode in the host computer. • The printer can be used with the warning displayed even without having replaced the ink tank. The ink low resetting/canceling is effective only when the BJ cartridge is installed. 5-22 Part 5: Maintenance BJC-50 b) Symptoms 1. The Power Does Not Turn On. <Symptom> • When the POWER button is pressed, the printer <Cause> does not turn on. • When POWER button is pressed, the printer does not start initialization. The universal adapter, lithium ion battery or control board. <Measure> Check the lock switch. Is it locked? Yes No Unlock the switch. Check the output voltage at the DC plug side. Is the output between 11.5V and 13.0Vdc? No (see Fig. 5-7) Replace the universal adapter Yes Can the lithium ion battery be recharged? Yes No Are the anbient and battery temperatures Yes below 0°C or above 45°C? No 1. Replace the control board. Recharge the lithium ion battery Leave the battery to cool in optimal temperature condition for 30 minutes. • The recharging circuit is defective. 2. Replace the lithium ion battery. 3. Replace the print unit. + Figure 5-7 DC Plug 5-23 Part 5: Maintenance BJC-50 <Symptom> • LED does not light. 2. Control Panel Failure <Cause> • The buzzer does not sound. Test printing cannot be done. • Operation buttons are ineffective. The LED or the beeper is defective. Buttons are defective. Flexible cables are defective. The control board is defective. <Measure> • See Fig. 5-8 Check conductivity of the connection cable to the control board. Is it unplugged? No 1. Replace the control board. Yes Replug the cable. • The LED or the beeper is defective. • The ASIC is defective. 2. Replace the print unit. Figure 5-8 Flexible Cables 5-24 Part 5: Maintenance BJC-50 3. BJ Cartridge is Not Recognazed. <Symptom> • The installed BJ cartridge is not recognized. <Cause> • When the BJ cartridge is installed, the carriage returns to the replacement position. • The installed BJ cartridge is not recognized correctly. The BJ cartridge does not contact the carriage properly. The BJ cartridge is defective. The carriage is defective. The control board is defective. <Measure> Remove and reinstall the BJ cartridge. Is it recognized? Yes No 1. Replace the BJ cartridge. • The BJ cartridge is defective. • Check the BJ cartridge. See Fig.5-9. 2. Replace the control board. • The ASIC is defective. END 14 11 Meter connection Pin No. Reading 11 14 Approx. 0 Ω BC-10 ∞ 11 14 BC-11e Figure 5-9 Head Connector 5-25 Part 5: Maintenance BJC-50 4. Print Defect <1> The Printer Does Not Print. <Symptom> • The printer does not print at all. <Cause> • The printer does not print in the middle. • The printer does not print one or more colors. No ink, defective BJ cartridge, defective control board, defective carriage ribbon cable, defective purge unit <Measure> Check the conditions for using the printer and printing paper specifications. Do they meet the specifications? No Use printing paper that meet the specifications. Yes Remove and reinstall the BJ cartridge. Do a Demonstration pattern print. Hold down the POWER button until the beeper sounds once and manual feed a sheet of paper. Press the RESUME button to print out the Demonstration pattern. Do a test print. Is the test result bad? No Yes END 1. Replace the ink cartridge. 2. Replace the BJ cartridge. Does the print defect persist after BJ cartridge replacement? No END Yes 1. Replace the print unit. 2. Replace the printer base unit. • The carriage unit is defective. • The purge unit is defective. 3. Replace the control board. 5-26 Part 5: Maintenance BJC-50 <Symptom> • The print is blurred. 5. Print Defect <2> White Streakes Appear. • White streaks appear. <Cause> The BJ cartridge, carriage ribbon cable, purge unit, or paper feed unit is defective (missing gear teeth). <Measure> Check the conditions for using the printer and printing paper specifications. Do they meet the specifications? White Line Sample No Use printing paper that meet the specifications. Yes Troubleshooting consists of error diagnosis, which is required if the is unknown, and error recovery, wh if the cause of an error is known. an error is unknown, perform the diagnosis, and if it is known, perfo recovery. Do a Demonstration pattern print. Hold down the POWER button until the beeper sounds once and manual feed a sheet of paper. Press the RESUME button to print out the Demonstration pattern. Remove and reinstall the BJ cartridge. Do a test print. Is the test result bad? No Yes 1. Replace the ink cartridge. 2. Replace the BJ cartridge. END 28 29 Does the print defect persist after BJ cartridge replacement? 24 25 26 23 22 21 20 27 16 17 18 19 No 14 13 12 11 7 8 9 5 6 4 1 2 10 END Yes 29 Check conductivity of the carriage ribbon cable. Is it broken? Yes No 1 1. Replace the printer base unit. 2. Replace the print unit. Replace the print unit. • The purge unit is defective. • The purge drive unit is defective. • The carriage unit or carriage ribbon cable is defective. 5-27 15 3 Part 5: Maintenance BJC-50 6. Print Defect <3> Other Print Problems Symptom ¥ Smeared paper ¥ ¥ ¥ ¥ Check Item Ink mist on the platen. Ink has clogged around the head's nozzles. (No smearing during paper feeding and discharging). Ink has clogged or paper bits have stuck around the purge unit's head wiper or head capping area. Ink has adhered to the paper transport system. (The paper is already smeared by the time it reaches the platen). Spur tracks appear Ink has adhered to the spurs. Spurs have deformed Misaligned vertical The BJ cartridge is installed lines appear incorrectly. The problem re-occurs when the user's BJ cartridge (causing the problem) is installed in a normally-operating printer. Corrugated printing Chassis is deformed. Frinctional wear between the carriage unit and the carriage shaft. Irregular darkness Check the printing mode. of printout BJ cartridge is faulty. 5-28 Measures Use a soft cloth moistened with water to clean. Clean a few times, If the problem persists, replace the BJ cartridge. Replace printer base unit. Clean the paper feed roller and the platen. Use a soft toothbrush to clean. Replace the print unit. Reinstall the BJ cartridge correctly. Replace the BJ cartridge. Replace the print unit. Replace the print unit. Reset the printing mode. Replace the BJ cartridge. Part 5: Maintenance BJC-50 <Symptom> • No printing 7. Faulty Interface <Cause> • An unspecified font is used to print characters. • Text is printed in an unspecified color. The printer driver is set incorrectly. The interface cable is defective. The control board is defective. (Printer) <Measure> Do a Demonstration pattern print. Hold down the POWER button until the beeper sounds once and manual feed a sheet of paper. Press the RESUME button to print out the Demonstration pattern print. Put the printer off-line and do a test print. Is the test result good? No Replace the control board. Yes (Normal) Check the settings of the host computer and printer. • Emulation • Printer driver setting • Font Are all settings correct? No Yes (Correct) Correct settings. Do a dump mode test print. Hold down the POWER button until the beeper sounds 5 times and manual feed a sheet of paper. The printer stands by for data transmission from the host computer. Set the printer to dump mode. Send data from the host computer and print it. Do transmitted data and received data match? No Yes END 1. Replace the interface cable. 2. Replace the control board. • The interface connector or ASIC is defective. 5-29 Part 5: Maintenance BJC-50 8. Scanner Cartridge: Installation Problems Symptom No head error message Check Item Scanner cartridge is installed incorrectly. Head mismatch error Scanner cartridge is installed message incorrectly. Driver not set to scanner mode. Paper feed error message Paper delivery error message Irregular scanned graphic image Scanning document is jammed. Check scanning document size. Check scanning document thickness. Scanning document is jammed. Check scanning document length. Measures Press the cartridge button, move the carriage to the cartridge replacement position and reinstall the cartridge correctly. Restart using the power button. Press the cartridge button, move the carriage to the cartridge replacement position and reinstall the cartridge correctly. Restart using the power button. Activate the scanner driver in the host computer. Switch setting to scanner mode. Press the RESUME button to erase the error message. Place the document between the scanning folder and rescan. Remove jammed document. Make sure the scanning document fits within the scanning folder. Recalibrate the white standard. Check if white standard was taken using the white calibration sheet. Check the scanner driver setting. Reset the scanner driver. Problems occur when the userÕs Replace the scanner cartridge. faulty scanner cartridge is installed. Check computer-printer Reconnect cables. connection. 5-30 Part 5: Maintenance BJC-50 6. CONNECTOR POSITION & PIN ALIGNMENT 6.1 Control Board CNH1 CNSEN2 CNBT2 CNSEN1 CNFL1 Upper Section CNOP1 CNCR1 CNIF1 Lower Section CNBT1 CNIR1 CNDC1 Figure 5-10 Control Board CNIF1 (Parallel Interface Connector) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Signal name STROBE DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8 ACKNLG BUSY P.E. GND GND SELECT AUTO FEED XT +5.0V INIT ERROR +5.0V SELECT IN GND N.C. GND GND N.C. IN/OUT Description IN See Part 2: 2.3.1 Parallel Interface for details (page 2-15) IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT OUT OUT OUT IN IN OUT IN 5-31 Part 5: Maintenance BJC-50 CNH1 (Cartridge Ribbon Cable Connector) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Signal name VHG (LAMPG) IN/OUT Description / (scanner cartridge in use) ... GND for head drive voltage VH (GND for scanner drive voltage 24V) VHG (LAMPG) ... GND for head drive voltage VH (GND for scanner drive voltage 24V) MCH0 (N.C.) IN Drive signal for temperature control heater (Unused) MCH1 (N.C.) IN Drive signal for temperature control heater (Unused) HVH (VLAMP) OUT Head drive voltage (Scanner drive voltage) HVH (VLAMP) OUT Head drive voltage (Scanner drive voltage) WHT (N.C.) OUT Drive signal for subheater (Unused) N.C. (N.C.) ... Unused (Unused) TOP (TOPS) IN Detection signal for rank resistance (Scanner cartridge recognition signal) DIA (C.CHA) IN Head temperature sensor (diode) anode (Scanner cartridge recognition signal) ID0 (ID0) IN BJ cartridge (black/color) detection signal (Scanner monochrome/color detection signal) ID1 (ID1) IN BJ cartridge (black/color) detection signal (Scanner monochrome/color detection signal) HCONT IN BJ cartridge (BC-11/BC-11e) detection signal (IS(INKS2) 11/IS-12 detection signal) HVSS (VSS) ... GND for head's logic drive voltage (GND for scanner's PCB drive voltage) HENBD (N.C.) OUT Head's heater drive signal (Unused) EVEN ENB (N.C.) OUT Even nozzle heater drive signal (Unused) HENBA (N.C.) OUT Head's heater drive signal (Unused) HENBC (N.C.) OUT Head's heater drive signal (Unused) ODD ENB (REN) OUT Odd nozzle heater drive signal (Scanner's register setting signal) BENB0 (RWR) OUT Block enable decoder generation signal (Scanner's clock signal for serial data transfer to register) BENB1 (RDT) OUT Block enable decoder generation signal (Scanner's serial data signal) BENB2 (N.C.) OUT Block enable decoder generation signal (Unused) HVDD (VDD) OUT Head's logic drive voltage +5V (Scanner's PCB drive voltage +5V) HCLOCK (DTCK) OUT Clock signal for print data transfer (Clock signal for scanning data input) HLATCH (LNST) OUT Timing signal to latch print data (Timing signal to start scanning) HRES (SRES) OUT Latch reset signal (Scanning operation reset signal) HENBB (N.C.) OUT Head's heater drive signal (Unused) HDATA (DT) OUT Print data (Scanning data) DIK (C.CHK) IN Head temperature sensor (diode) cathode (Scanner cartridge recognition signal) 5-32 Part 5: Maintenance BJC-50 CNIR1 (IrDA Module Connector) Pin No. 1 2 3 4 5 6 7 8 9 10 Signal name GND MODE +5.0V (Vcc1) GND RXD/PRXD GND TXD/PTXD GND +5.0V (Vcc1) GND IN/OUT Description OUT IrDA unit type switch signal IN/OUT Infrared light transmitting & receiving signal IN/OUT Infrared light transmitting & receiving signal 5-33 Part 5: Maintenance BJC-50 The BJ cartridge or the scanner cartridge is recognized by the pin No. of connector CNH1 on the control board or by a combination of ID1 and ID0 as shown below. Pin No. 11 12 13 Signal name ID0 ID1 HCONT Cartridge type Low High Black Color, scanner Low Low Low (BC-11e), (IS-12) / High (BC-10, BC-11) CNLF1 (Paper feed motor connector) Pin No. 1 2 3 4 5 Signal name COM LF B LF A LF A LF B IN/OUT IN OUT OUT OUT OUT Description Paper feed motor Paper feed motor Paper feed motor Paper feed motor Paper feed motor drive voltage +20.0 VDC phase B phase A phase A phase B CNCR1 (Carriage motor connector) Pin No. 1 2 3 4 Signal name CR B CR B CR A CR A IN/OUT OUT OUT OUT OUT Description Carriage motor Carriage motor Carriage motor Carriage motor phase phase phase phase B B A A CNDC1 (DC power connector) Pin No. 1 2 3 Signal name VIN -VIN GND IN/OUT Description IN +13 VDC IN Negative ( - ) side of DC input voltage CNBT1/CNBT2 (Lithium ion battery connector) Pin No. CNBT1 1 CNBT1 2 CNBT2 1 CNBT2 2 Lithium Lithium Lithium Lithium ion ion ion ion battery battery battery battery Description "+" terminal "Ð" terminal thermistor terminal ON/OFF output control terminal 5-34 Connector Position Control board (Lower section) Control board (Upper section) Part 5: Maintenance BJC-50 CNOP1 (Optional ASF and Connector) Pin No. 1 2 3 4 5 6 7 8 Signal name OP-VH OP-Vcc1 RXD0 TXD0 SCLK0 +5.0V (Vcc3) OP-ON GND IN/OUT OUT OUT IN/OUT IN/OUT IN IN Description Motor drive (24V power supply) Microcomputer drive (5V power supply) Serial data receiver Serial data transmitter Paper end sensor read signal Power on/off drive control signal CNSEN1 (Home Position Sensor/Paper End Sensor Connectors) Pin No. 1 2 3 4 5 6 7 Signal name PES +5.0V (Vcc1) GND HPS +5.0V (Vcc3) RTC (Vdd) GND IN/OUT Description OUT Paper end sensor sensing signal OUT Home position sensor sensing signal Timer IC drive signal CNSEN2 (Paper Delivery Sensor Connectors) Pin No. 1 2 3 Signal name +5.0V (Vcc3) FIRRXD +5.0V (Vcc3) IN/OUT Description OUT Delivery sensor sensing signal 5-35 Part 5: Maintenance BJC-50 6.2 Carriage Ribbon Cable 28 29 24 25 26 23 22 21 20 27 16 17 18 19 15 14 13 12 11 3 7 8 9 10 5 6 4 1 29 1 Figure 5-11 Carriage Ribbon Cable Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Signal name VHG VHG MCH0 MCH1 HVH HVH WHT N.C TOP DIA ID0 ID1 HCONT HVSS HENBD EVENENB HENBA HENBC ODDENB BENB0 BENB1 BENB2 HVDD HCLOCK HLATCH HRES HENBB HDATA DIK IN/OUT Description To BJ cartridge See CNH1 GNDH GNDH OUT MCH1 OUT MCH2 VH VH IN SUB Spare 1 OUT RNK IN DIA OUT ID0 OUT ID1 OUT IND GNDL IN HEAT-D IN EVEN IN HEAT-A IN HEAT-C IN ODD IN B-ENB0 IN B-ENB1 IN B-ENB2 IN VDD IN D-CLK IN LT-CLK IN RESET IN HEAT-B IN I-DAT OUT DIK 5-36 2 Part 5: Maintenance BJC-50 6.3 BJ Cartridge BC-11e IDATA DIK D CLK VDD EVEN GND L LTCLK BENB2 HEAT -B IND (Spare2) Spare1 VH RE SET BENB1 HEAT -D ID -1 RANK MC H2 BENB0 SUB ID -0 ODD HEAT HEAT -C -A GND H VH GND H DIA MC H1 Figure 5-12 BC-11e Contact Pad 6.4 Scanner Cartridge IS-12 SDATA SCLOCK DIK S SSYNC CMD3 NC SQW NC VLAMP SRES CMD2 NC ID -1 TOPS NC VDD CMD1 NC VSS ID -0 CMD0 NC NC NC VLAMP DIAS NC Figure 5-13 IS-12 Contact Pad 5-37 LAMP G LAMP G Part 5: Maintenance BJC-50 7. CIRCUIT DIAGRAMS 7.1 Parts Layout 7.1.1 Control board (Upper section) 5-38 Part 5: Maintenance BJC-50 7.1.2 Control board (Lower section) 5-39 Part 5: Maintenance BJC-50 This page intentionally left blank 5-40 Part 5: Maintenance BJC-50 7.2 Circuit Diagrams 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 01 A Vpp CNDC1 Vcc1 FB1 1 3 2 Vcc1 EMI IC1 D5 C81 C1 0.1µ,25V C82 ZD1 R1 22K,1/16W,D C2 2200µ,25V 1 2 3 4 FB2 EMI F1 R5 10K,1/16W R3 180K,1/16W CT VSC OUT GND RESET VSA VSB/RIN VCC RESET 8 7 6 5 <02-F1> D1 R2 2K,1/16W,D Vcc1 C4 2.2µ,16V IC2 R4 33K,1/16W C6 0.1µ,25V C5 0.1µ,25V 5 6 7 8 C9 2.2µ,16V R117 0,1/16W R116 10K,1/16W C3 0.1µ,25V B C7 100p,50V R6 220,1/4W Q3 <02-E6> CHG-ON 2 3 1 2 3 4 1 Vcc EXT CEL CS SW1 SW2 LV GND 8 7 6 5 Vcc1 4 1 R118 IC4 1 2 3 R14 300K,1/16W R12 7.5K,1/16W R11 0.13,1/4 1 2 Vpp C10 0.1µ,25V C11 0.1µ,25V 8 6 5 Q5 CHGLEV 7 R13 7.5K,1/16W 4 VIN SW GND F/B C12 1000µ,6.3V,D10 4 3 Vcc1 1 D2 <05-F5> V2-ONC 1 3 Vpp R34 22K,1/16W 2 3 R33 47K,1/16W + – R16 2K,1/16W R35 47K,1/16W ZD5 ZD4 LF-PRT 4 VH IC3 BATLEV T C 2 1 PES 5 4 ZD6 2 R19 10K,1/16W <03-G5> C13 3 Q19 VH-ON Cs Es Ct GND R21 200,1/16W 1 2 3 4 1 Q12 2 3 C15 3300p,50V C16 3300p,50V 1 C14 330p,50V R22 1K,1/16W Q11 2 3 Q13 2 R26 820,1/16W 1 ZD3 C17 0.1µ,25V R28 51,1/10 R29 10K,1/16W 3 E 2 3 C18 470µ,35V Q15 R30 2.7K,1/16W 2 C19 470µ,35V 3 1 OP-ON <04-F7> Q18 1 F R36 2K,1/16W <04-D8> <02-F1> D9 2 2 R24 68K,1/16W 1 3 ZD9 BTA-ON D7 3 Q2 R114 R39 2.2K,1/16W 1K,1/16W Cd Si V+ INV 1 3 R20 1K,1/16W 2 <02-F1> PWRON 8 7 6 5 R25 15K,1/16W <02-F3> <05-F7> 3 D10 2 3 DA1 1 2 Q16 Q14 IC5 R18 10K,1/16W THBAT OP-VH Q17 D8 1 1 EMI 2 L2 3 Vcc1 FB5 <03-F1> 1 Q10 R31 7.5K,1/16W <05-F1> BTC 1 Vpp CNBT2 D Q9 8 R17 23.2K,1/16W 1 2 Q8 1 R32 100K,1/16W <05-F5> 2 3 2 D3 ICP2 CNBT1 R79 47K,1/16W V3-ONC R9 4.7K,1/16W R15 300K,1/16W D6 D4 2 R8 100,1/16W 2 R7 1M,1/16W IC3 OP-Vcc C Q7 1 ZD2 3 3 <03-G5> <04-E7> Vif 2 3 ICP1 Vcc3 Q6 L1 R119 47K,1/16W R10 0.13,1/4 Vcc2 Q1 R37 23.2K,1/16W R38 10K,1/16W R27 330K,1/16W LFREF1 <02-C1> R23 330K,1/16W DCLEV <03-F1> 1 R115 1.5K,1/16W D13 G D15 5-41 Part 5: Maintenance BJC-50 FB3 EMI EMI FB4 <03-B1> <05-D7> <05-D7> <05-E7> <05-C1> <05-B1> <05-B7> <05-B7> <05-B1> <05-B7> <05-B1> <03-F1> 20 A <20..1> A <03-B1> HCONT HLAT BENB3 VH R47 2.7K,1/16W Vcc1 0 1 2 3 4 5 C26 0.01µ,50V <03-G5> <03-D1> ADSEL UW <03-D1> RAS 6 7 Vcc1 9 0 1 2 3 15 14 13 12 11 10 9 8 C27 0.01µ,50V <03-D5> LCAS <03-E1> <03-E1> UCAS OE 8 7 6 VH-ON V2-ON RESET 5 4 ASIC IC6 T6W73 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 7 6 3 2 1 1 2 3 4 15 14 13 12 11 10 9 8 1 2 3 4 R57 10K,1/16W C29 6p,50V IFD3 <04-B7> IFD2 <04-B7> IFD1 <04-B7> IFD0 <04-B7> ACK IFD7 IFD6 IFD5 IFD4 <04-D7> <04-C7> <04-C7> <04-C7> <04-B7> FAULT SLCT PE BUSY <04-D7> <04-D7> <04-D7> <04-D7> TXD SELIN INIT AUTXT STB RXD C33 0.01µ,50V R46 10K,1/16W RA3 8 7 6 5 DA3 HZM6.8FA 1 DA4 HZM6.8FA 4 C37 0.01µ,50V 4 8 7 6 5 DA4 HZM6.8FA 5 DA5 HZM6.8FA 4 DA5 HZM6.8FA 5 DA6 HZM6.8FA 4 DA6 HZM6.8FA 5 5 2 3 2 1 2 Vcc2 3 1 2 8 7 6 5 3 2 R58 10K,1/16W <01-C1> MCH0 MCH1 HVH HVH 23 W-HT 22 IHKS1 21 TOP 20 DIA 19 ID0 18 ID1 17 IHKS2 16 HVSS 15 14 HENBA EVENENB 13 12 HENBB HENBD 11 10 ODDENB BENB0 9 8 BENB1 BENB2 7 6 HVDO HCLOCK 5 4 HLATCH HRES 3 2 HENBC HDATA 1 Vcc1 Vcc1 C D E 2 Vcc1 B Vcc1 R59 470K, 1/10W CE0 CE1 V3-ON <03-F1> <03-E1> <05-F1> 8 <03-F1> 6 R62 100K, 1/16W R64 100, 1/16W 8 R65 180K,1/16W 1 1 5 R61 12K, 1/16W DIK 3 7 HDIS 2 4 4 IC7 IC7 R63 100K,1/16W C42 0.01µ,50V F R66 R67 7.5K,1/16W 1K,1/16W C35 0.01µ,50V 16 D <15..0> <03-B1> CNSEN2 C34 0.01µ,50V <04-F8> R43 1M,1/16W NMI R42 220,1/16W <04-C8> X2 24MHz 3 C41 Vcc1 R45 10K,1/16W RA2 1 2 1 2 3 4 R60 33K, 1/16W Vcc1 Vcc1 C30 8p,50V C31 8p,50V PW-LED ERR-LED MODE TOPC HPS PES Vcc1 <04-F8> <04-E7> <04-D7> <04-C7> <04-B7> R41 1M,1/16W <05-E1> <05-F7> <01-F3> <05-F7> <04-F7> <04-B8> <04-C8> <04-F8> X1 R40 23.04MHz 270,1/16W CC-SW <04-D8> RCV-SW <04-E8> BZOUT <04-B8> BTA-ON 5 2 C40 Vcc1 CHG-ON RA1 3 2 DA3 HZM6.8FA C36 0.01µ, 50V 18 19 20 DA2 HZM6.8FA R55 100,1/16W 5 4 3 2 1 0 9 10 11 12 13 14 15 16 17 4 2 R53 22K,1/16W R54 20K,1/16W R56 100,1/16W R51 10K,1/16W Vcc1 Vcc1 C28 6p,50V DA2 HZM6.8FA HID <03-F5> 27 26 25 24 Q20 R49 1K,1/16W C39 8 7 6 5 4 VHG VHG 2 Vcc1 R52 11K,1/16W R50 330K,1/16W HRANK <03-G1> A8 A7 A6 A5 A4 VSS A3 A2 A1 D7 D6 VDD D5 D4 D3 D2 D1 D0 A9 A10 A11 A12 A13 A14 A15 A16 A17 VSS A18 A19 A20 A21 VDD D15 D14 D13 D12 D11 D10 D9 D8 CS0 SC1 P61 Vcc1 29 28 1 3 TOPCC <05-E5> 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 P63 P74 P75 P76 P77 MD0 MD1 MD2 MD3 MD4 MD5 VDD MD6 MD7 LW UW VSS RAS MA9 MA0 MA1 MA2 MA3 MA15 MA14 MA13 MA12 MA11 MA10 MD9 MA8 LCAS VDD UCAS OE MA8 MA7 MA6 VSS MA5 MA4 P62 P60 RES CSSEL LBP0 HDRES PB1 PB2 AGND TEST AD3 AD2 AD1 AD0 VREF HCONT HCLK HDATA HLAT BENB3 BENB2 BENB1 ODENB EVENB HENB3 HENB2 HENB1 HENB0 MCHE1 MCHE0 VSS WHEAT PB0 PB3 PB7 VDD PB6 PB3 PB2 PA1 PA2 PA3 P73 P72 P71 P70 RD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 C8 0.1µ,25V <01-G3> R48 3.9K,1/4 W-HT <05-E5> MA <9..0> 10 Vcc1 <01-F3> <05-F1> <01-B10> MCH0 MCH1 <05-F5> <05-F5> HRES EVENB HENBC HENBB HENBA HENBD C21 1000p,50V LFREF1 ALFM BLFM ALFM BLFM CNH1 VH BENB2 BENB1 ODDENB P86 SX1 SX0 MOD1 LX1 LX0 MOD2 IFSEL LPB3 LPB2 LPB1 VDD SNMI P53 P54 P55 VSS P64 P65 P84 IRRXD FIRRXD IRTXD SELIN INIT AFXT STB VSS FAULT SLCT PC BUSY VDD ACK IFD7 IFD6 IFD5 IFD4 VSS IFD3 IFD2 IFD1 IFD0 VDD <01-F8> <05-E1> <05-F1> <05-E1> <05-G1> 10 CONTROL PCB ASS'Y 02 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 <03-B1> 9 C38 C22 1000p,50V 16 8 BK1608LM182 C23 1000p,50V MD <15..0> 7 HCLK HDATA BK1608LM182 AD0 AD1 AD2 AD3 C24 1000p,50V 6 Vcc1 C25 0.01µ,50V R44 47K,1/16W 5 E-OE TE-CLK TE-DIO MTSTB CRREF2 CRREF1 ACRM BCRM ACRM BCRM RD <05-E1> <04-F7> <05-D10> <05-C7> WHEAT TXD0 E-DO T-OE <05-F1> <05-F1> MCHE1 MCHE0 C20 0.01µ,50V Vcc1 Vcc1 <03-F5> <03-G1> <03-G1> <03-G5> 4 RXD0 BATT-LED WR 3 <04-F7> 2 <04-C8> <03-E1> 1 ZD8 1 2 3 G 5-42 Part 5: Maintenance BJC-50 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 03 A <02-A6> <02-G6> <02-B1> <02-C1> A <20..1> 20 D <15..0> 16 MD <15..0> 16 MA <9..0> 10 B 17 DRAM(4M) FLASH ROM(4M) FONT ROM(8M) IC8 IC9 IC10 Vcc1 0 1 2 3 4 5 6 7 <02-D1> <02-D1> UW RAS 9 0 1 2 3 C43 0.01µ,50V <02-E1> <02-E1> <02-A2> <02-F6> <02-F6> <02-A5> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VSS I/O15 I/O14 I/O13 I/O12 VSS I/O11 I/O10 I/O9 I/O8 NC LCAS UCAS OE A8 A7 A6 A5 A4 VSS Vcc I/O0 I/O1 I/O2 I/O3 VCC I/O4 I/O5 I/O6 I/O7 NC NC WE RAS NC A0 A1 A2 A3 VCC Vcc1 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 16 15 14 13 12 11 10 9 15 14 13 12 11 10 9 8 Vcc1 LCAS <02-E1> 8 7 6 5 4 18 8 7 6 5 4 3 2 C44 0.01µ,50V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 A15 A14 A13 A12 A11 A10 A9 A8 NC NC WE RESET NC NC RY/BY NC A17 A7 A6 A5 A4 A3 A2 A1 A16 /BYTE VSS DO15 DO7 DO14 DO6 DO13 DO5 DO12 DO4 VCC DO11 DO3 DO10 DO2 DO9 DO1 DO8 DO0 OE VSS CE A0 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 19 18 8 7 6 5 4 3 2 1 15 7 14 6 13 5 12 4 11 3 10 2 9 1 8 0 C46 0.01µ,50V 0 8 1 9 2 10 3 11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 N.C. A18 A17 A7 A6 A5 A4 A3 A2 A1 A0 CE GND OE D0 D8 D1 D9 D2 D10 D3 D11 N.C. A19 A8 A9 A10 A11 A12 A13 A14 A15 A16 BYTE GND D15 D7 D14 D6 D13 D5 D12 D4 Vdd 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 20 9 10 11 12 13 14 15 16 17 C Vcc1 15 7 14 6 13 5 12 4 D C47 0.01µ,50V OE 1 UCAS E WR CE1 CE0 RD F Vcc1 IC11 <01-G8> <02-F6> <01-E5> <02-B1> <02-B1> <02-C7> DCLEV HDIS BATLEV AD1 AD2 HRANK 1 2 3 4 5 6 7 8 W1 X0 X1 X Y Y0 VEE VSS VDD W0 W Z Z1 Z0 Y1 CONT 16 15 14 13 12 11 10 9 C48 0.01µ,50V HID AD0 AD3 THBAT TH CHGLEV ADSEL <02-C7> <02-B1> <02-B1> <01-F3> <04-G7> <01-D5> <04-E7> <02-D1> G 5-43 Part 5: Maintenance BJC-50 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 04 A Vcc1 Vcc3 Vcc3 Vif BZ1 R71 1K,1/16W R72 100,1/16W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 C50 1000p, 50V RA7 C51 1000p, 50V C52 1000p, 50V C53 1000p, 50V C54 1000p, 50V C55 1000p, 50V C56 1000p, 50V Q21 B <02-F5> <02-F5> <02-F5> <02-F4> <02-F4> <02-F4> <02-F4> <02-F4> <02-F3> PW-LED R75 300,1/16W LD1 <02-F3> <02-A2> R76 R77 ERR-LED BATT-LED 1 K 2 K 300,1/16W 300,1/16W C57 1000p, 50V 4 A 3 A LD2 C 1 2 3 4 Vcc1 R80 10K,1/16W R78 1K,1/16W R87 100,1/16W R88 1K,1/16W C62 1000p, 50V C61 0.01µ,50V C65 1000p, 50V C64 1000p, 50V C63 1000p, 50V AUTXT <02-F4> ACK <02-F4> BUSY <02-F4> PE <02-F4> SLCT <02-F4> FAULT <02-F4> INIT <02-F4> <02-G3> D14 NMI SW1 C58 0.01µ,50V <01-F3> SW2 GND PWRON Vcc1 D R81 10K,1/16W <02-F2> SW3 CC-SW C59 0.01µ,50V C66 1000p, 50V GND Vcc1 R82 10K,1/16W R89 1K,1/16W Option ASF 3 BZOUT Vcc1 8 7 6 5 8 7 6 5 RA6 <02-F3> 1 IFD0 IFD1 IFD2 IFD3 IFD4 IFD5 IFD6 IFD7 1 2 3 4 STROBE DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 DATA8 ACK BUSY PE NC NC SLCT AUTXT +5V INPRM FAILT +5V SELIN S-GND NC S-GND S-GND NC <02-F4> C49 1000p,50V RA5 1 2 3 4 RA4 2 STB 1 2 3 4 CNIF1 R73 1K,1/16W 1 2 3 R70 1K,1/16W 8 7 6 5 R69 5.6K,1/16W 8 7 6 5 R68 390,1/8W R74 1.5K,1/16W BZ SELIN <02-F3> <02-F3> SW4 RCV-SW C60 0.01µ,50V OP-VH E OP-Vcc CNOP1 ZD10 DA8 1 4 3 GND CHGLEV <01-D5> <03-G5> RXD0 <02-A2> TXD0 <02-A4> 2 2 DA8 L4 1 5 Vcc1 3 L5 4 5 CNIR1 2 DA7 4 R85 1K,1/16W 3 Vcc3 2 6 DA7 1 C67 0.1µ,25V OP-ON <01-F10> 2 Vcc1 MODE <02-F3> 5 7 <02-F3> L3 0.1A SCLK0 (PES) <02-G3> <02-F3> C68 0.1µ,25V RXD TXD R90 68,1/16W 8 C69 4.7µ,10V TH1 TH <03-G5> R92 12,1W 1 2 3 4 5 6 7 8 9 10 (IR) F R93 12,1W R86 47K,1/16W G 5-44 Part 5: Maintenance BJC-50 1 2 3 4 5 6 7 8 9 10 CONTROL PCB ASS'Y 05 Vcc1 A Vpp Carriage Motor Driver IC12 CNCR1 R95 R96 0.39,1/2W 0.39,1/2W <02-A4> <02-A5> <02-A5> R94 10K,1/16W CRREF2 BCRM BCRM 1 C70 0.1µ,25V R97 1.6K,1/16W 2 1 2 3 4 5 6 7 8 9 10 OA OA SGA Sen.A GND GND VrefA PhA PhA Sth. VM OB OB SGB GND GND Sen.B VrefB PhB PhB 20 19 18 17 16 15 14 13 12 11 R99 0.39,1/2W R98 1.6K,1/16W R100 0.39,1/2W C73 0.1µ,25V 4 3 1 2 B B A A R101 10K,1/16W B CRREF1 ACRM ACRM <02-A4> <02-A5> <02-A4> IC13 1 2 3 4 X3 32.768KHz 2 MTSTB R104 10K,1/16W Q22 3 <02-A4> Vcc1 TIMER IC 3 Q23 R102 C71 15K,1/16W 0.01µ,50V C74 0.1µ,25V C72 0.1µ,25V C75 33µ,25V R103 C76 15K,1/16W 0.01µ,50V tpout xout xin vss vdd sio sck cs 8 7 6 5 C D11 1 <02-A4> T-OE Vcc1 Vcc1 EEPROM(2M) IC14 <02-A4> <02-A4> VH Paper Feed Motor Driver IC15 1 2 3 4 E-OE TE-CLK R105 5.6K,1/16W VH NC Vcc CS SK NC GND DO DI D R106 10K,1/16W 8 7 6 5 E-DO R77 0.01µ,50V <02-A4> CP2 CP1 ZD12 <02-A4> <02-F3> WHEAT TOPC <02-C1> ALFM <02-C1> <01-D10> 1 2 3 4 5 6 7 8 ALFM LF-PRT C78 1µ,10V D12 I1 I2 I3 I4 I5 I6 I7 GND O1 O2 O3 O4 O5 O6 O7 COM 16 15 14 13 12 11 10 9 W-HT TOPCC <02-B7> <02-C7> <02-A4> E TE-DIO CNLF1 1 3 4 2 5 R107 0.68,1/2W CNSEN1 COM A A B B 6 7 <01-F3> <02-F3> PES Vcc1 IC16 R79 0.01µ,50V R108 18K,1/16W <02-A4> <02-F1> <02-A4> <02-F6> <02-C1> MCHE1 V2-ON MCHE0 V3-ON BLFM <02-C1> BLFM 1 2 3 4 5 6 7 8 I1 I2 I3 I4 I5 I6 I7 GND O1 O2 O3 O4 O5 O6 O7 COM 16 15 14 13 12 11 10 9 MCH1 V2-ONC MCH0 V3-ONC <02-B7> <01-D8> <02-B7> <01-C10> <02-F3> HPS Q24 Vcc1 Vcc3 3 R110 22K,1/16W R112 100K,1/16W 1 2 5 R111 220,1/16W 2 1 R109 18K,1/16W F 4 C80 1000p,50V 3 R113 180,1/10 G 5-45 The printing paper contains 70% waste paper. 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